id string | image_1 string | image_2 string | image_3 string | image_4 string | image_5 string | question string | options list | answer string | knowledge-source string | course string |
|---|---|---|---|---|---|---|---|---|---|---|
52625795-1_6 | iVBORw0KGgoAAAANSUhEUgAAAJIAAACwCAIAAABrfaDkAAAgAElEQVR4Ae2dCXxM19vHxRJJCBFCLEGLWkLsVGpfYilavEVbey2xFLUTsa8REkvEXprat79SYq1aa6mtJIhE7CKJWLIheL93LtfIJHNnMpPJjMz9xDj33HPPec7zO89znvOc5Vq8ffs2i/kyNQ5kNTWCzfQKHDDDZpLtwAybGTaT5IBJEm2WNjNsJskBkyTaLG1m2EySAyZJtFnazLCZJAdMkmiztJlhM0kOmCTRZmkzSdiymyTVBiGauZE3b968fv2a0rJly5Y1a1YL... | null | null | null | null | As <image_1>shown in the figure, in a horizontal uniform electric field and a uniform magnetic field perpendicular to the paper, there is a vertical fixed insulating rod MN that is long enough. A small ball P is sleeved on the rod. It is known that the mass of P is\(m\), the amount of charge is\(+q\), the electric fiel... | [
"The acceleration is greatest when the ball starts to slide",
"As the speed of the ball increases from\\(\\frac{1}{2}v_0\\) to\\(v_0\\), the acceleration of the ball decreases all the time",
"Ratio of the velocity of the ball to\\(v_0\\) when\\(a=\\frac{1}{2}a_0\\)\\(\\frac{v}{v_0}=\\frac{1}{3}\\)",
"When\\(v... | B | 电磁学_磁场 | phy |
49418802-1_11 | iVBORw0KGgoAAAANSUhEUgAAAVoAAAFFCAIAAAAis7JvAAAgAElEQVR4Ae2dBXhURxeGI8SdJAQnghMCBAnBQ9DgTnEKxQptqbd/3b20pS3SIi1SCsXd3d0hBCfubiT/u7l0mwYIoSwkd/fsQ9O9s3NnzvnOmW/OyJ1rnJubayQfQUAQEASMjEwEBEFAEBAEFASEDsQTBAFB4A4C6qCDrKysnJyc/Ea7fft2dnZ2/hQykK1ACtnyj4b4npmRkT8PKZSTv3AlhRvzZ7tbgLuru1skpSj+5i8qIz09/yW/cmN+AfiV6goIgLYFUjQCZGbm... | null | null | null | null | As <image_1>shown in the figure, a thin-walled narrow strip box with a mass of $M = km$and an internal height of $h$and a small block with a mass of $M$are fixed to a sufficiently high ceiling with an inextensible light rope. Light, smooth fixed pulleys are connected, and their lower ends are $h$above the sandy horizon... | null | $11m\sqrt{2gh}$, direction vertical upward | 力学_动量及其守恒定律 | phy |
48329822-1_11 | iVBORw0KGgoAAAANSUhEUgAAATsAAACYCAIAAAAUQdlkAAAgAElEQVR4Ae2d93Nc15XnkXMOjZxzDkwgSBAkIYqSKNGyJY0l2ZJm7N0fPFvlmR92/5P5YWprp3ZqyqVZS1pKFiUxZxIgQBA555xDA2jktJ/G0z41G0CzAXTuC8us193v3Xffefd7Tz7HcXt720H8CQoIClgJBZysZJ5imoICggJqCgjEinUgKGBNFBCItaa3JeYqKCAQK9aAoIA1UUAg1prelpiroIBArFgDggLWRAEXA00WF5HjzlCaB7rHls7XfY741fooMDk+PjU1... | iVBORw0KGgoAAAANSUhEUgAAAL8AAACiCAIAAACfwIsUAAAgAElEQVR4Ae2daZPcRpKmcWQi76yTpyi1RKnV10yvrdn+wPltu7Zfds1mxro1vRIpkZRIimLdlfcFYJ/XA0CisqrYJEWKRTLBIjIARAQC4S/cPdw9An6apt56W/fAa/VA8Fql1oXWPaAeWKNnjYPX74E1el6/79Yl1+hZY+D1e6BSFB2zjUa1Wq1arYZhJQh8No+/9bbugUt6YImeOI6n02mSJPEiBkCVaiUMwyAMLym4Pr3uAW+JnjRJ5vP5gn+VeRRF9UadvQcL8mBA... | null | null | null | It is known that a straight single-core cable parallel to the ground surface is buried underground in a certain area. There is a changing current flowing through the cable and a changing magnetic field around it. Therefore, it is possible to measure the induced electromotive force in a closed probe small coil on the gr... | [
"The underground cable is directly below the two-point connection line of $ac$, at a depth of $\\frac{\\sqrt{6}}{6} \\,\\text{m}$",
"The underground cable is directly below the two-point connection line of $cd$, and the depth from the ground surface is $0.5\\,\\text{m}$",
"The electromotive force in the probe c... | AD | 电磁学_电磁感应 | phy |
48329820-1_4 | iVBORw0KGgoAAAANSUhEUgAAAYAAAAD/CAIAAAB3ppZIAAAgAElEQVR4Ae2dBVxV5xvHBSywEFBAFFAQu7u7u9s5W2f3nDrn7BlT55yds2v27Ba7RbEQUJQOUVDR/9fd/e8Q8HpBbvIwP/uce8573vi95/zO+z5p8uHDh1TyJwgIAoKALhAw1UWj0qYgIAgIAh8REAKS50AQEAR0hoAQkM6gl4YFAUFACEieAUFAENAZAkJAOoNeGhYEBAEhIHkGBAFBQGcICAHpDHppWBAQBISA5BkQBAQBnSGQOsktR0dHb/pzXZJvlxsFAUHA6BFo... | null | null | null | null | In <image_1>the circuit shown in the figure, the power supply voltage remains unchanged. The resistance value of the fixed resistor is $R_0$, and the filament resistance is $R_L$. Ignoring the effect of temperature on the filament resistance,$R_0:R_L=1:2$, first turn the single-pole, double-throw switch $S_3$to contact... | [
"$I_1:I_2=3:4$",
"$P_1:P_2=9:8$",
"Power supply voltage is 12V",
"$R_0=20\\Omega$"
] | C | 电磁学_恒定电流 | phy |
48329820-1_25 | iVBORw0KGgoAAAANSUhEUgAAAP8AAADoCAIAAACvuaW+AAAgAElEQVR4Ae2dB1xUx9bABRSUIr1Il2JFRMTeG/beS2LsJTGamOSZ+kw35cVoEmPyYo0ae6/YexcpAiLVBggooCJVvz/u99Z12cVl2V12l7s/YubOnTvlzJmZM6caPHv2rJrwEyBQJSFgWCVHLQxagEAJBATsF/Cg6kJAwP6qO/fCyKvrOgjy8/IS4uPjY2MfPLjPX35+vpW1tb2Dg729Q9PAQHNzC10foPb3Py72OlNwLzUlPT29uKioZq1advYOrm5uPr71nJydtbn/... | null | null | null | null | In the <image_1>circuit shown in the figure, the power supply electromotive force $E=12\,\text{V}$, the internal resistance $r=8\,\Omega$, the constant resistance $R_1=20\,\Omega$,$R_2=10\,\Omega$,$R_3=20\,\Omega$, and the value range of the sliding rheostat $R_4$is $0\sim30\,\Omega$. All meters are ideal meters. Close... | [
"$\\text{V}_1$The reading becomes smaller, then $\\text{V}_2$The reading becomes larger,$|\\Delta U_1| $is less than $|\\Delta U_2| $",
"$\\left|\\frac{\\Delta U_1}{\\Delta I}\\right|=20\\,\\Omega,\\ \\left|\\frac{\\Delta U_2}{\\Delta I}\\right|=25\\,\\Omega$",
"The power of $R_4$increases first and then decrea... | ABC | 电磁学_恒定电流 | phy |
50348410-1_4 | iVBORw0KGgoAAAANSUhEUgAAAOcAAABuCAIAAABTKZNnAAAKlElEQVR4Ae2de1BU1x3HWZcFlpfAUl4ShRIBo0IqgYY0lTCaBNA4yTg4GiIqNDpGo8lM2mn/6HQ6mWmm0+m0007bOE1M4jt2oq02poWGdkArMCgUykMrBLSDPCLyWoF99re7dndZuOwNePaee/3uAHP3PH/n8/vy27P3cY7KarX6yfBVe6nm+28e3L3/4LbtpSqVSoYjgMnzJ7Bo/lUlranX62/39g4O9Pn5QbKSekKKzuWq2vusZPk5IYWfldWnzFWrLGdgNCIJQLUi... | iVBORw0KGgoAAAANSUhEUgAAAO8AAADPCAIAAACSvhHYAAAgAElEQVR4Ae19B1ib57k2IIEkQEjsvY2NB+CJV5x44L3SxHZOk7iZVxqn45yO6++V9pyeXFevnqa9+rf9T1fa5pyM2m1sZzixTWxjGy+8AIOxY7CZthkCBAgJDTT/+9MHsgBJTElIej5j+L53Pe97v7cevet7Hn+TyeRHFyHgFQgEeEUrqBGEAIMAsZl44D0IEJu9py+pJcRm4oD3IEBs9p6+pJYQm4kD3oMAsdl7+pJaQmwmDngPAsRm7+lLagnXiRCYtxn9/f0diDAY... | null | null | null | As shown in Figure A<image_1>, two smooth metal guide rails that are long enough are fixed in the same horizontal plane and placed in parallel. The spacing between the guide rails is $L$. There is a uniform magnetic field downward vertically in the horizontal plane. The magnetic induction intensity is $B$. The left sid... | [
"When $F_0=\\frac{k R m}{B^2L^2}$, the metal rod moves in a straight line at a uniform acceleration of $\\frac{F_0}{m}$",
"When $F_0=\\frac{k R m}{2B^2 L^2}$, the metal rod performs acceleration with reduced acceleration, and the final acceleration is $\\frac{F_0}{2m}$",
"When $F_0=\\frac{k R m}{2B^2 L^2}$, the... | AD | 电磁学_电磁感应 | phy |
50348410-1_10 | iVBORw0KGgoAAAANSUhEUgAAAeYAAADDCAIAAADY5yWpAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzddXwT5xsA8Pe9y8WTpqm7OxQvlOLu7i5jMPiNbcg2ZAw2NmQbY9iUIRsMGD6c4m4tUqi7W9omafzu/f0R6BgUqCcp7/cPPlyau3uSpk/ee+993wcihACGYRhmCQhTB4BhGIZVFU7ZGIZhFgOnbAzDMIuBUzaGYZjFwCkbwzDMYuCUjWEYZjFwysYwDLMYOGVjGIZZDJyyMQzDLAZO2WYAAZ1Op1arjVs0TSuVSjwr... | null | null | null | null | <image_1>The guide rails $a$and $b$are composed of a quarter-smooth arc parallel guide rail with a radius of $r=0.4\,\text{m}$and a horizontal guide rail. The right end of the guide rails $c$and $d$are well connected. The width of the guide rails $a$and $b$is $L_1=2\,\text{m}$, and the width of the guide rails $c$and $... | null | The speed of metal rod $P$is $\frac{2}{3}\,\text{m/s}$, and the speed of metal rod $Q$is $\frac{3}{4}\,\text{m/s}$ | 电磁学_电磁感应 | phy |
49015606-1_4 | iVBORw0KGgoAAAANSUhEUgAAAncAAAEACAIAAABeZ8fRAAAgAElEQVR4AeydBVxU2dvHbcFGMEAwsbC7C7vF7u7OdddVV91Q19U11u7uVrC7AFsxERUQkDRQAYP3y97/OzvODMMwzAwzw5nl4945c+6J3z33POfp1LGxsanERyAgEBAICAQEAgIBPSCQRg9tiiYFAgIBgYBAQCAgEIhDQFBZsQ4EAgIBgYBAQCCgLwQEldUXsqJdgYBAQCAgEBAICCor1oBAQCAgEBAICAT0hYCgsvpCVrQrEBAICAQEAgIBQWXFGhAICAQEAgIBgYC+... | null | null | null | null | As shown in the figure <image_1>, two smooth horizontal rails $A_1B_1$ and $A_2B_2$ are placed parallel to each other with a spacing of $L=1\\,\\text{m}$, in a uniform magnetic field of $B=0.4\\,\\text{T}$ directed vertically downward. The left side of the rails is connected to a supercapacitor with capacitance $C=0.1\... | null | The wireframe cannot pass through the $B_x$area. The position coordinate of the right border when the wireframe stops,$x$, is $\frac{\sqrt{5}}{10}m$ | 电磁学_电磁感应 | phy |
49015606-1_9 | iVBORw0KGgoAAAANSUhEUgAAAXEAAADXCAIAAABj1/a0AAAgAElEQVR4Ae2dBVhV2dfGVWwsEGxARBoBCUFBEAPF7sScsWscdUInnBknrTHH7m4xAAlFUbGwuwtFwcDC/n545rv/O8SVuFzOhe3jM3O8p/Zee5+1117rXe/K/+HDh3zij5CAkICQgJokUEBNzxGPERIQEhASSJKA0CliHggJCAmoUwJCp6hTmuJZQgJCAkKniDkgJCAkoE4JCJ2iTmmKZwkJCAkInSLmgJCAkIA6JSB0ijqlKZ4lJCAkoB06BRDN/dh761atfJqQIAA1... | null | null | null | null | As <image_1>shown in the figure, parallel metal rails of sufficient length are fixed on the insulating slope with an inclination angle of $\alpha=30^{\circ}$, and the spacing between the rails is $l=0.5m$, regardless of resistance; the $x$axis is established along the direction of the guide rail, and the dotted line EF... | null | 2.5m | 电磁学_电磁感应 | phy |
49015606-1_10 | iVBORw0KGgoAAAANSUhEUgAAAkAAAADNCAIAAADfSVhOAAAgAElEQVR4AeydBXxTVxuHcXeHFikUWqBYcXd3d3cZNhgyxmAbsuHu7u4uxR0KFHcKFCstReot3xPut7uQpslNkyZperL+2JVzj/zvuec9r8f99u1bHPETCAgEBAICAYFATEMgXkzrsOivQEAgIBAQCAgEVAgIAibmgUBAICAQEAjESAQEAYuRr010WiAgEBAICAQEARNzQCAgEBAICARiJAKCgMXI1yY6LRAQCAgEBAKCgIk5IBAQCAgEBAIxEoEEMbLXotMCgRiLQEhI... | iVBORw0KGgoAAAANSUhEUgAAANQAAADZCAIAAADXIomRAAAgAElEQVR4Ae1dBVxUWRcXaZCwCGlEsFux1m5Xd1UwsREMSrA71kQUFFFZTOxYC2stFAPEBAQJlRJE6ZLm++Ps9xyGYZjBGebNzOXbn99799134//+c+69555zrlR5eXk98kcQEAYC9YVRKamTIFCBACEf4YHQECDkExr0pGJCPsIBoSFAyCc06EnFhHyEA0JDgJBPaNCTimXoD0FeXl5ZaSlLO6WlpRUVFaXq1/Dj+RgT07hpEzU19e/5+SUlJSyFsNzKycvLyclJSUmx... | null | null | null | As shown in Figure A<image_1>, the number of turns of coil A is $n=100$turns, the enclosed area is $S_1=1.0m^2$, and the resistance is $r=2\Omega$. There is a uniform magnetic field region D with an area of $S_2=0.5m^2$in A, and the change of its magnetic induction strength $B$is shown in Figure B<image_2>. At t=0$, th... | null | 4.8m | 电磁学_电磁感应 | phy |
51315805-1_14 | iVBORw0KGgoAAAANSUhEUgAAAgoAAAEMCAIAAAAqEgmCAAAgAElEQVR4AeydBUCU5x/Hle4WBRQwEDEIuzBnd+vsnE63qSt1rtycMd3m5sKas7u7O7GwEEQRKenOO+D/OW67P5IHHIr43Bi+8bxPfN/j93t+XTEzM7OC+AgEBAICAYGAQOBlBNRePhVnAgGBgEBAICAQkCEg2IP4HggEBAICAYFAHggI9pAHKOKSQEAgIBAQCAj2IL4DAgGBgEBAIJAHAoI95AGKuCQQEAgIBAQCgj2I74BAQCAgEBAI5IGAYA95gCIuCQQEAgIBgYBg... | null | null | null | null | As <image_1>shown in the figure, there is a single-pole, double-throw switch K at the upper ends of the metal rails MN and M'N 'with an inclination angle of $\theta=53^{\circ}$. When the switch is connected to 1, the rail is connected to a circular metal coil with a number of turns of $n=100$turns and a cross-sectional... | null | \frac{13}{15}J | 电磁学_电磁感应 | phy |
50267920-1_1 | iVBORw0KGgoAAAANSUhEUgAAAMcAAAD+CAIAAAABEob0AAAgAElEQVR4Ae2dB2BUxdPA75JLr0AIJYEk9N5LgNA7Cn9EVESUpiD2giKin9grTUFQAekC0nsXBEWpKr23hA7pvdz329vkcal3yaXcwXvGY9/b2dnZ2dnZ2Tar1ev1GvVROVCoHLArVGwqMpUDggOqVKlyUPgcUKWq8HmqYlSlSpWBwueAKlWFz1MVoypVqgwUPgdUqSp8nqoYValSZaDwOaBKVeHzVMWoSpUqA4XPAVWqCp+nKkZVqlQZKHwO2KpUpaWlRUVGxsfHy9Vx... | null | null | null | null | An insulating string spans two smooth fixed pulleys in the same vertical plane (paper surface). One end of the rope is connected to a square metal wire frame abcd with a mass of m and a side length of L, and the other end is connected to a mass of 2m. block. There is a uniform magnetic field with magnetic induction int... | [
"During the process of the ab edge moving from Ⅲ to Ⅳ, the frame speed is constant at $v_1$",
"$v_1=\\frac{mgR}{2B^2L^2}$",
"At $t=\\frac{3mR}{4B^2L^2}+\\frac{B^2L^3}{mgR}$, the ab edge coincides with II",
"The movement of the cd side from Ⅰ to Ⅱ takes the same time as the movement from Ⅲ to Ⅳ"
] | AC | 电磁学_电磁感应 | phy |
50267920-1_2 | iVBORw0KGgoAAAANSUhEUgAAAcYAAAC2CAIAAADMVboLAAAgAElEQVR4Ae3dB4DdRbU/8Fu2ZTe9EJCShBJ6VelFEBUQEQuP/ld676BSRUDAR1EBxSdFFFB6e6KgoqD0DgkdElpIo6Vvtv4/vztwuW/L3bvJ7mY3O1eNvzJzZubMzvd35swp6ebm5tSi/FrXSi8KmVgnciByIHJgKeJA2aKOJQLoonIu1osciBxYejmwyJC69LIkjixyoHdzoOnTX+/uZv/qXTqdzmazmUwmQmr/mvg42j7NAWq6xsbGhoaGN9988/333+/TY1k6Om9G... | null | null | null | null | As <image_1>shown in the figure, the inclination angle of a sufficiently long smooth slope is $\theta=30^{\circ}$, and the space above the slope is evenly spaced with strip-shaped uniform magnetic fields upward. The magnetic induction intensity is $B=1T$, The width of the strip-shaped magnetic field area and the spacin... | null | 4.84J | 电磁学_电磁感应 | phy |
50267920-1_4 | iVBORw0KGgoAAAANSUhEUgAAAisAAADGCAIAAACciVcKAAAgAElEQVR4Ae3dBYBcxf0H8PM4CQQCBCJYKBpKgOLFHQoULVYoLkWKFC9WpLi2QJA/WqC0WHEo7m4FGhJcEiAhySWXs//n8uCx7O3u7e3t7u3dzWt6vH1v3sxvviM/md/8pry5ubksXAGBgEBAICAQECg6AhVFLzEUGBAICAQEAgIBgRYEAgcK/SAgEBAICAQEOgeBwIE6B/dQakAgIBAQCAgEDhT6QEAgIBAQCAh0DgKBA3UO7qHUgEBAICAQEKjqGASJfnTlZWV++huu... | iVBORw0KGgoAAAANSUhEUgAAAL4AAAC/CAIAAADPSvFvAAAdfUlEQVR4Ae3debytUxkHcBcVTYoyZVaiEJlSrsyRkkyllIpMySeUDBVyc83KVBEq91KuKSKklAz3mjIlUl0Z6l6iyRRN32PpPfu8ezh77/O+++zhef84Z+211/Q+67ef9UxrrQn//e9/54gnKNA6BeZsvUrUCAoMUSCgEzhokwIBnTYJF9UCOoGBNikQ0GmTcFEtoBMYaJMCAZ02CRfVAjqBgTYpENBpk3BRLaATGGiTAgGdNgkX1QI6gYE2KTA+0OFzTU/jUefK/L9S... | null | null | null | As shown in Figure A<image_1>, the number of turns of coil A is $n=100$turns, the enclosed area is $S_1=1.0m^2$, and the resistance is $r=2\Omega$. There is a uniformly strong magnetic field region D with a cross-sectional area of $S_2=0.5m^2$in A, and the change of its magnetic induction strength of $B$is shown in Fig... | null | 18W | 电磁学_电磁感应 | phy |
50267920-1_17 | iVBORw0KGgoAAAANSUhEUgAAAXoAAAC2CAIAAABYn9G8AAAgAElEQVR4Ae2dB4AURbrHJ89GlrRLhiWDRAkKBhQwAAJmDjHLqc9DT8yeT8Wc9czhlHsq3mH2PONhBA5QQJCcc067y+bZSe/X0+wwzEzPTvfM7PTsVJ+39HRXV331Vde/v1RfGb1er0EcggOCA4IDieeAKfFNiBYEBwQHBAckDgi4Ee+B4IDgQD1xQMBNPTFaNCM4IDhgESxIaQ5geJOtbyajMaU7EjvxHp8VEi4Y054VsTMzQTUI6SZBjK2nal0e7+yDzoXFLnd6W/zB... | iVBORw0KGgoAAAANSUhEUgAAALgAAADCCAIAAAB16J83AAAgAElEQVR4Ae2dCZQUVZaGc6m9KAoEZUdAQFRAQVsElVZbpY8N9iA47su0Y9uLHtwYHJVDo90cHLSXEbSlddzxSLuCtKiNCtqKyiYgHNlkp1iLorasXCLmexGYZKW5RLzILTIjTpFERsbb7vvffffdd+99blVVXc7lUCAZBTzJXnB+dyggKOAAxcGBIQo4QDFEJuclBygOBgxRwAGKITI5LxXlAQnCCze3250HzUlTEyxSyfZAYXGvutyKy+V1QBIfYooqqASFPLJUsv3U... | null | null | null | As shown in Figure 1<image_1>, a horizontal conveyor belt that is long enough drives at a constant speed in the clockwise direction at a speed v. In a certain area of the conveyor belt, there is a bounded uniform magnetic field with a direction vertically upward, a magnetic induction intensity of B and a width of s. No... | [
"A stage in the process of entering a magnetic field in which there can be no uniform motion of the wire frame",
"This process lasts for a time of $\\frac{2B^2L^3-3v}{\\mu mgR}-\\frac{3v}{4\\mu g}$",
"The electrical heat generated in the process frame is $\\mu mg(L+s)-\\frac{15}{32}mv^2$",
"Compared with empt... | BD | 电磁学_电磁感应 | phy |
50267919-1_12 | iVBORw0KGgoAAAANSUhEUgAAAQYAAABvCAIAAACB2/lNAAAgAElEQVR4Ae19Z3Qcx5XuRGAGwAzCIBNEIAmKWRQzZdkiKdKSLImSlSzJb+1d+9iPPme9et4f67OWgyy/5+fjHz7Hz97nJ3tXYc1VtERRlkRLokiJGYEEM0EEgiRymoDJ093T76vumWFPRDUwoCCqmjyDrup7b926VbfqVk3XN1pRFDXsYhZgFohaQBe9YX+ZBZgFiAWYS7B+wCwQZwHmEnHmYAlmAeYSrA8wC8RZgLlEnDlYglmAuQTrA8wCcRZgLhFnDpZgFmAuwfoA... | iVBORw0KGgoAAAANSUhEUgAAALMAAACUCAIAAABX348qAAAdcklEQVR4Ae2dB3xUVfbHpySTTHojPUBoUqOI9F4URakWEF1chGWxoOtnVfTv/pcVC38s6IqufFwLyoLAiiAdVDqCNAFRASmhJCSEJKS3mcz/++bCY0jCZDLMJG+G99T45r777j33nN8999xz77tHa7FYNOqlcqAaB3TVUtQElQMSB1RkqDiomQMqMmrmi5paH8hQTRlPxJnbkQEsuEwmE39dwqBK6+WSotRC7HDAx84zVz0qKirau3dv79699Xr9tcoEOkLkWq1WzqPT... | iVBORw0KGgoAAAANSUhEUgAAAKkAAACZCAIAAADbzY3VAAAeR0lEQVR4Ae2dCXhURbbHe0ln6ez7AiFh3/clgiCCiggIfqI+REYUGUdRZBR0fDLy9NMZddCngiAiCqI8REVURBZBVlkkiMgiGtaQQEJC9j29vN9NhZ5MJ+kldCe3lwtfp27d2s75n3PqVN26VUqj0ajwXh7JAZVHUu0lWuKAF3vPlQMv9l7sPZcDnku5V++92DuIAwaDQa/Xe8cODmKnc4txsN5XVFR88MEHYO8e8AtCEGj3IMdMlByJPQz6+eefX3nllfT09Gtklll2... | null | null | As shown in Figure A<image_1>, two parallel smooth metal guide rails are fixed on the insulating horizontal plane, and the left end is connected to a resistor with a resistance value of $R=1.5\Omega$, and the distance between the guide rails is $L=1m$. A conductor rod with a length of $L=1m$and a resistance value of $r... | [
"The current in the loop first gradually increases and then gradually decreases",
"The direction of current in the loop changes at a certain time within 2 to 3 seconds",
"When $t=1s$, the ampere force on the conductor rod is $\\frac{13}{8}N$, and the direction is to the left",
"The net charge amount of the co... | BCD | 电磁学_电磁感应 | phy |
50267920-1_25 | iVBORw0KGgoAAAANSUhEUgAAAo4AAAC7CAIAAABkRIiAAAAgAElEQVR4AeydB6AURdKA9+VEDpIkiySRYM6eOYdTMeuZcwJ+MWFWxICoYEJF5cyYIyqImEAUJIrknOHlsPn/Zhvmlt2Z3p3Z2TCPmfMesz3d1dXV1VXd1dXVWcFg0OU8DgUcCjgUcCjgUMChQKZSIDtTEXPwcijgUMChgEMBhwIOBRQKOKra4QOHAg4FHAo4FHAokNEUyN0ZO4zhWVEp4QkRX8M/Oe8OBRwKOBRwKOBQwKGA9RSIUNXRmjg6xXokHIgOBRwKOBRwKOBQ... | null | null | null | null | The figure <image_1>shows a schematic diagram of electromagnetic driving and electromagnetic damping experiments. The dividing line PQ divides the horizontal plane into left and right parts, the left plane is rough and the right plane is smooth. The driving magnetic field on the left side is a uniform magnetic field wi... | null | B_0 \geq 2\sqrt{2} \, \text{T} | 电磁学_电磁感应 | phy |
52153709-1_13 | iVBORw0KGgoAAAANSUhEUgAAAtkAAAEsCAIAAACZmDj+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1xUZ7o4cKYPU6lDkd47iIKIig0QjVgxamKLm01yk03ySbKbu8nu3s2WbLl7s7nuxpu4MUVNNBpjxQaKCNKk96ZDhxmYYQrTyzm/P97PPXd+Q3FUcIA83z/ywZkz57wzmTnnOW95HhKO4w4AAAAAAHZCtncDAAAAAPCjBrEIAAAAAOwJYhEAAAAA2BPEIgAAAACwJ4hFAAAAAGBPEIsAAAAAwJ4gFgEAAACAPUEs... | iVBORw0KGgoAAAANSUhEUgAAAzgAAAGDCAIAAABofCJKAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdeXxTVfow8HtvbvalWZqtbWja0r20pWUvS9n3ARSUKsiqOO846jguo/Nz3EVnRnEfREVlEVlEENuyQ9mxUJZSSvd9S9Ikzb7d3PePo5nYlgqCEJnnqx8+pUluThZynzznnOfBaZrGAAAAAABA6CFu9wAAAAAAAEDvIFADAAAAAAhREKgBAAAAAIQoCNQAAAAAAEIUBGoAAAAAACEKAjUAAAAAgBAFgRoAAAAAQIiC... | null | null | null | A-F are common organic compounds, and the production of unsaturated hydrocarbons A can be used to measure a country's petrochemical level: B can be used as food packaging materials. The transformation relationship of each organic compound is <image_1>shown in the figure. Experiments were <image_2>carried out with the e... | [
"Concentrated sulfuric acid only serves as a catalyst",
"The long tube in test tube a does not extend below the liquid surface to prevent back-sucking",
"Saturated Na ˇ CO solution reduces the solubility of ethyl acetate and facilitates stratification",
"After the experiment, shaking test tube a can observe t... | A | 有机化学基础 | che |
52153709-1_10-1 | iVBORw0KGgoAAAANSUhEUgAABfwAAAFiCAIAAAAshY71AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1hbV54HfK4aqkhCEojeMb0XY5rt2Ji4hyROPImTOHHmebKZzGSnZGbrZPLsZJ93d+aZTWYyJZlkMonT7LjEdrCxsWPcwGDTe8cSVSCEhLruve8f911e1gXjAlj4+/nLwNXVAUtX93zPOb9D0DTtAQAAAAAAAAAAywtrqRsAAAAAAAAAAAD3H0IfAAAAAAAAAIBliLPUDQAAAAAAAAC4PyiKslgsIyMj7e3tGo3G... | null | null | null | null | Organic matter is closely related to human life and development. (1)Ethyl acrylate (H\(_2\)C=CHCOOCH\(_2\)CH\(_3\)) is an important synthetic monomer and chemical intermediate. It can be used to produce a variety of polymer materials with different properties. It is widely used in the textile industry, adhesives, leath... | null | 1 | 有机化学基础 | che |
52153706-1_9 | iVBORw0KGgoAAAANSUhEUgAAAkMAAAHRCAIAAADmHSoZAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd2AUxdvHn9m9fpfLpSekQAg1tEDovUkRBBGIFFEERKSoFBWlKE1pooIKIsIr/CCgFCkCCkgNSJFeQgkkkN4vyfXbnfePxTMku6HdZS/JfP6Ay5aZ787O7rPTngdhjIFAIBAIhAoLJbYAAoFAIBCeC2LJCAQCgVCxIZaMQCAQCBUbYskIBAKBULEhloxAIBAIFRtiyQgEAoFQsSGWjEAgEAgVG2LJCAQCgVCxIZaM... | null | null | null | null | A research team simulated the reaction. When the temperature is t, a certain amount of CO\(_2\) and H\(_2\) are filled into an evacuated closed container with a volume of 1L, and the reaction reaches an equilibrium state in 5 min. From the reaction for 2 minutes to the reaction reaching equilibrium, the curves of the a... | null | 5:12 | 化学反应原理 | che |
52153706-1_2 | iVBORw0KGgoAAAANSUhEUgAAA/AAAAD+CAIAAAAS33m0AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO3dd2AUZf4/8Nme7Zu2SUijE0SKpyAcAmIBC2fhPEA5sSAnKl+VuwP1BBEpyskdtlO+B5xSjqLAKQrSu9QAQQimQHrZJLub3c22bP398fxufvvb3SSbybYh79c/LNkpz8w8z85nnnkKx+v1UgAAAAAAwE7cWCcAAAAAAACYQ0APAAAAAMBiCOgBAAAAAFgMAT0AAAAAAIshoAcAAAAAYDEE9AAAAAAALIaAHgAAAACA... | iVBORw0KGgoAAAANSUhEUgAAAf4AAAGtCAIAAAB4F4ErAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd3xUVd4/8HP79JJJ7w1ICBAEQXqVJtgRVLDuo4+6+qir++y6u8/+3H0e1+3rT1cf8eda1ragLCBKkSo1dIQEAklII3VSpt9+zu+PQRYpEZLATDLft76U3Llzz3dC8pk75557DkUIQQAAAGIJHekCAAAAXGsQ/QAAEHMg+gEAIOZA9AMAQMzpM9F/uv506dEyRdMiXQgAAPR5fSb6t2za8r+vv9na2VlXV1dXV+fz... | null | null | null | In a closed container with a volume of\(2L\), when\(800^\circ C\)\(2NO(g)+O_2(g)\rightleftharpoons2NO_2 (g)\) In the system, the change of n(NO) with time is as follows<image_1>. The following statement is incorrect: | [
"The <image_2>curve showing the change of\\(\\mathbf{NO}_2\\) in the figure is a",
"Use\\(\\mathbf{NO}_2\\) to express the average rate of the reaction from 0 to 2 s\\(v=0.003\\,\\text{mol/(L·s)}\\)",
"At equilibrium, the conversion rate of\\(NO\\) is 65\\%",
"\\(v_{\\text{inverse}}(\\mathbf{NO})=2v_{\\text{p... | A | 化学反应原理 | che |
51521149-1_34-1 | iVBORw0KGgoAAAANSUhEUgAAAl4AAAD5CAIAAAB5xayuAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1QU1x7HZ2Z7py0svQmIgAgCxqDB3mPEiMYWW9QYS2wpliRq1KjR2I367JpoYlfsaMCOiApSpdfdZdney8y8P+7Lvg0gAqKomc/xeNjdO3fuzs7c7y2/AuM4DhEQEBAQEBD8DdLWDSAgICAgIHizIKSRgICAgIDgHxDSSEBAQEBA8A8IaSQgICAgIPgHhDQSEBAQEBD8A3Izy+MQBDf0pi31CxAQEBAQELw1NFca... | null | null | null | null | Ammonium ferrous sulfate\([(\text{NH}_4)_2 \text{Fe(SO}_4)_2]\) is an important reagent in analytical chemistry. Ammonium ferrous sulfate can be completely decomposed when isolated air is heated to 500 ° C, and the decomposition products contain iron oxides, sulfur oxides, ammonia gas and water vapor. A chemical group ... | null | Device B did not take anti-suction measures when ammonia was introduced into device | 常见无机物及其应用 | che |
51521149-1_34-2 | iVBORw0KGgoAAAANSUhEUgAAAhMAAAFWCAIAAABcvIgxAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1jU2NrAk0yv9N4ERAVUBOzC2hFcCxas2NvqioW1L6Kia8OuKCq4i4juCvayYkMFKyCgoCAC0jvMML0k+f449843FxBBaWJ+j4/PTHKSvAmT855z3gbjOA4REBAQEBA0GqStBSAgICAg+M4gNAcBAQEBQdMgNAcBAQEBQdMgNAcBAQEBQdMgNAcBAQEBQdMgNAcBAQEBQdMgNAcBAQEBQdMgNAcBAQEBQdMgNAcB... | null | null | null | null | <image_1>Ammonium ferrous sulfate\([(\text{NH}_4)_2 \text{Fe(SO}_4)_2]\) is an important reagent in analytical chemistry. Ammonium ferrous sulfate can be completely decomposed when isolated air is heated to 500 ° C, and the decomposition products contain iron oxides, sulfur oxides, ammonia gas and water vapor. In order... | null | CEFB | 常见无机物及其应用 | che |
51521149-1_32-1 | iVBORw0KGgoAAAANSUhEUgAAAY8AAAEOCAIAAAD+FAzNAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1wTSf848OymkBBa6F1EBMECAqKiYgEsWBELir2dYjvvUc/GqaigZzsrJ4iI7dTDXimKqIiKgkpHeu8kpJGyu78/9vnlmycBRMFAdN4v/zCTyexsSD6ZmZ2dgTAMIwAAAHR7cFdXAAAAoF1AtAIAQDmAaAUAgHIA0QoAAOUAohUAAMoBRCsAAJQDiFYAACgHEK0AAFAOIFoBAKAcQLQCAEA5gGgFAIByANEKAADl... | null | null | null | null | According to the two-dimensional map of the valence class of sulfur<image_1>, there is a record on "silver needle testing" in the "Xi Ji Lu" by Song Ci, a famous forensic scientist in the Song Dynasty. Silver needles are mainly used to test whether there are toxic substances containing sulfur. One of the reaction princ... | [
"When the silver needle turns black, it means that the substance being tested may be toxic",
"During silver needle testing,\\( \\text{Ag} \\) was oxidized",
"X acts as a reducing agent in the above toxicity testing reaction",
"The ratio of the amounts of the oxidizing agent and the reducing agent in the above... | CD | 常见无机物及其应用 | che |
51521149-1_23 | iVBORw0KGgoAAAANSUhEUgAAAh4AAAGMCAIAAAAa5zzIAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1gUyfPwdzbvknOUICACRkQUFcwIgoLpDAccwSwqoJ7xFMF0HmYFA4rooaJnTqhnVlAxIaLknHbJy7JxwvtHP79597sLy+pxp9zN5w8fnO3p6emZqequqq6GMAwjERAQEBAQdB3kb90AAgICAoJ/G4RqISAgICDoYgjVQkBAQEDQxRCqhYCAgICgiyFUCwEBAQFBF0OoFoJ/AyiKdm2FROQkAcFfgVAt/2ZgGC4v... | null | null | null | null | The working principle of the acid fuel cell alcohol detector used to detect drunk driving is shown in the figure<image_1>. The following statement is incorrect: | [
"The Y electrode is positive",
"When the battery is working, electrons flow from the X electrode to the Y electrode through the external circuit",
"When the battery is operating, H\\(^+\\) migrates from left to right through the proton exchange membrane",
"The negative reaction formula of this battery is\\(\\... | D | 常见无机物及其应用 | che |
52125266-1_16 | iVBORw0KGgoAAAANSUhEUgAAAT4AAAD1CAIAAABGAg6kAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddXwU1xaA547srCUbN0I8wV2DFHcneAtFCsGlQCmlpbRAW6SlSIs7RYtDcYdAkARNICHusklWZ3fk3vfHwDaFEOQRssB+P957ecnszJ27c+ace+4RgBDCbNiw8b6Bl/cAbNiw8SbYRNeGjfcSm+jasPFeYhNdG2ULQkgQhLdyHpG3MagPAZvo2ihDEEJms/n+vfsZGRkmhikueyX+IAjCi+RcEIT0tLT8/HyjwWgT... | iVBORw0KGgoAAAANSUhEUgAAATsAAADzCAIAAAB2cib9AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddXwURxvHZ9bOL8ldlCQEIpAEd6dvcSlS3J2WYm1pS5ECxaVGkQJtcStatILT4u4kkBBIIEEi57a7M+8fG9IUghTukj2y37Z8aLI7Oyu/eZ555pkZiDEGEhISXgJR1BWQkJD4D0iKlZDwJiTFSkh4E5JiJSS8CUmxEhLehKRYCQlvQlKshIQ3ISlWQsKboIq6AhISuSCEEEIkSQr/CyF85XIwxgRBvHIJYkZSrIQo... | null | null | null | People have designed a method to prepare sulfuric acid from industrial waste liquid as raw material. Electrolysis of $(NH_4)_2SO_4$waste liquid to produce concentrated sulfuric acid and at the same time obtain ammonia water. The schematic diagram of the principle is shown in Figure 1<image_1>. Some students designed a ... | null | D polar region | 化学反应原理 | che |
52125266-1_14 | iVBORw0KGgoAAAANSUhEUgAAAjQAAAEtCAIAAACQ2G2aAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd0ATyf8//t2EQAi9SpGiFAUsqKBYEBBF1LNhr9g9rG/vxPNORAFPTz3FguWNBzawYDkVD8+KAja6iNI7SK8hpO/+/pj3dz/50eS8KEFfj7/I7mQyCbDPzOzsLE6SJAYAAADIElp3NwAAAABoDcIJAACAzJFrdyubzT506NAXbwwAoEtwHFdSUtq6dWt3NwSAzwVv95zToUOHvL291dTUFBUVu6NVAIDONDY2trS0... | null | null | null | null | Preparation of methanol ($CH_3OH$). The synthesis of methanol from $CO_2$and $H_2$mainly involves the following reactions: Reaction 1: CO_2(g) + 3H_2(g) \rightleftharpoons CH_3OH(g) + H_2O(g) \quad \Delta H_1= -49 \, \text{kJ} \cdot \text{mol}^{-1} Reaction 2: CO_2(g) + H_2(g) \rightleftharpoons CO(g) + H_2O(g) \quad \... | null | \frac{\frac{0.12}{3.76}p \cdot \frac{0.2}{3.76}p}{\frac{0.8}{3.76}p \cdot \left(\frac{2.56}{3.76}p\right)^3} | 化学反应原理 | che |
52250091_80 | iVBORw0KGgoAAAANSUhEUgAAAs4AAAGdCAIAAACNfGK/AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wTWRvoyaQSEhJ6FamCilQpohQVQQUFBRYQy9qRothRdO1iRZG1FxC7FEFF194AEVFAULEgvUgLSUhIm5n74dw3NxcUUUFwN/8P/jCZnJk5M+ec5zwVg6KojBQpUqRIkSJFSu8A9fUFSJEiRYoUKVL+zUhFDSlSpEiRIkVKL4Lr6wuQIkWKFCn/CYC9nsvlwjBMJpOxWCyCIDIyMlgsVvIYBEG4XC4EQSQSCYIg... | iVBORw0KGgoAAAANSUhEUgAAAIgAAABACAIAAABOY6jcAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAQXElEQVR4nO2ceVBT1xfHgQiCyN4EhEAWNimyRUTcSpWBUaQC2qKiWKstaArSUZxobQXHojYoU6UtYK1bx2JBEZdiHRGrVgFlcQFHLRDCGiGY/SV5y83vj9eftTWELIDpTD5/wn3nnXe/99137jn3xlylUpmZMD4s3rQDJtRjEsZIMQljpJiEMVJMwhgpJmGMFJMwRopJGCPFJIyRYhLGSDEJY6SYhDFSTMIYKRO0bKdSqTAMMzAV... | null | null | null | Propranthaline bromide is a drug used to assist in the treatment of duodenal ulcers. Its synthetic route is shown in the figure: <image_1>X is an isomer of I and has the following structure and properties: ① It contains <image_2>structure;②1mol of X undergoes a silver mirror reaction. 4mol of silver can be formed;③ It ... | null | 12 | 有机化学基础 | che |
52250091_78 | iVBORw0KGgoAAAANSUhEUgAAA0EAAAEsCAIAAACKai8jAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9d3Bb15n3z4uL3jsBECTYAXYSrKIKKYmSVSyrusmyE8eJd5Nssp7Nzo4zm8xmMpns7m+z8SbZFCcusi3Lkm01q1mNEjspsPcCdjQCIHpv9/fHmZcvX0q2xQpSOp8/NOQVeHHuwcW5z3nK90EwDIuBQCAQCAQCgWwocNEeAAQCgUAgEAhk0UAbDgKBQCAQCGTjAW04CAQCgUAgkI0HtOEgEAgEAoFANh7QhoNAIBAI... | null | null | null | null | Compound Q is an intermediate in the synthesis of an antipyretic and antitussive drug. One route to synthesize Q is as follows: <image_1>Among the aromatic isomers of E, there are ( ) ones that simultaneously meet the following conditions.① There are 3 substituents on the benzene ring;②1mol of the organic compound can ... | null | 6 | 有机化学基础 | che |
52250091_77 | iVBORw0KGgoAAAANSUhEUgAAAzoAAAGZCAIAAADOxNOKAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdZ1wT2fsA+kxJoSS00KVYWBCxgIhiAxUbIhZsrOiCitgVVsVefitrR0FsWBDFgmVdu2vvZUXsFZUuIL2FJJOZuS/O/c/NBWVRQRGf7ws/mEw5mWRmnjnlORjLsjwAAAAAAFBf4d+7AAAAAAAAoDoQrgEAAAAA1GsQrgEAAAAA1GsQrgEAAAAA1Gvk9y4AAA0Ny7IqlUqlUrEsy7IshmEEQfD5fAzD0OsMw/B4PO51... | null | null | null | null | The comprehensive utilization of straw (containing polysaccharides) is of great significance. The route for synthesizing polyester polymers from straw as raw material is as shown in the figure<image_1>. J is an isomer of E, and there are ( ) structures of J that meet the following conditions (regardless of stereoisomer... | null | 8 | 有机化学基础 | che |
52250091_75 | iVBORw0KGgoAAAANSUhEUgAAAzgAAAGFCAIAAAC+JcFXAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzddVwU3fs4/NmguwUVEZBGwEBFQERAxETEQLA7EVu5xbgNxAIF66NiJ2GAApJKiZKC0iUNS7O9+/tjntc++13Qm95Frvdf7JnZnWtg2b3mzDnXwTCZTAQAAAAAAPAePLcDAAAAAHgXiUQiEAgYDEZeXh6Hw3E7HDDsQKIGAAAAdKG8vPzSpUshISGGhoa1tbWNjY3u7u6Ojo7cjgsML1huBwAAAADwFjqd/ujRIwcH... | null | null | null | null | The 2021 Nobel Prize in Physiology or Medicine is awarded to two scientists for discovering temperature and tactile receptors, the discovery of which is related to capsaicin. One synthetic route for capsaicin 1 is as shown in the figure <image_1>(some reagents or products have been omitted). Among the isomers of G, the... | null | 13 | 有机化学基础 | che |
51068595-1_3-10 | iVBORw0KGgoAAAANSUhEUgAAAgQAAADSCAIAAAC6mE/aAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9dUBU2Rs3zr0TdA4lIY3SUtKNgR24rrUGK8baga6BgYviYrK2qNiKfu1kRUEpFYMUEEQ6BximZ+6d94/n997fvOjuGsAMyOcvOFxmnnPuOefp50FEIpFMH/rQhz704ccGKmkC+tCHPvShD5JHHzPoQx/60Ic+yJAlTUAf+tAJEIlEIpEIx3EweyIIgqIoiqLwpw7jMjIyMCISieAxBEEkPQNpAWE37luTHw19zKAP... | iVBORw0KGgoAAAANSUhEUgAAALkAAADnCAIAAADNS2CMAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO1dd1wU59Zme2FZepWld6UIoiIiggbE3rvGGluK0ai5Mc32xahJjBq9JsZEjcaumBglisaGYFCagEuRDgss2/vuzHx/nNy5cxdQNLAC2ecPf+swOzvlmfOe97znPIeEYZiFGWZ0AORXfQJm9BhQX/UJdFNg/wH+GT4Y/YvvTCKR4DN8MPqX+AHfs8fhH80VnBAoimIE6PV6uVyuUCgUCoVSqVSpVJr/QPsfGAwGBEEQ... | iVBORw0KGgoAAAANSUhEUgAAAFEAAAD2CAIAAAAh9Pw3AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAUb0lEQVR4nO2deVBTV/vHc+5NAglgkCWRAAZQjGgdtxbZnEJtRayKjorigloX6jbKOOqMdWfq206rlVFHW6zTis5UpWq1VrRaZdSK4II7IquEgKyRJSHbPb8/nve9k18SIkYSbO/9/OHIk3tvzvee/eQ8z0EYY86/HTONRM+lpMdgomau6R8Y446ODr1e33Pp6WZcXFxcXFzMjMi0rBuNxmXLlhUUFJAkiRByegq7GYqifvvtN6lU... | null | null | Thin-plate chromatography is widely used in biochemical experiments. The surface of the thin plate is coated with silica gel, and its cross-section is shown in Figure 1<image_1>. Take the liquid in Device A and place it on the thin plate M. When the mixture of ethyl acetate and n-hexane drives the sample to climb on th... | null | The O-H absorption peak disappears (or answer "hydroxyl/-OH absorption peak disappears") | 化学实验基础 | che |
51068595-1_3-3 | iVBORw0KGgoAAAANSUhEUgAAAhAAAAEICAIAAACBD1q1AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOz9Z1wU1/v4D+/MbKX3jgKKAjbsiqioQY0FsYASW6KiKGJP0FiwG3uwJJYYFRsq9g6CXRALxUJTelnKAssu22fm/+C6P3PvjxY0Rfl63g/yMsPMmWtmd891zlUxmqZZCAQCgUD8FfjnFgCBQCAQLQOkMBAIBALRLJDCQCAQCESzQAoDgUAgEM3ibyoMmsWi//cP7SP1jyMQCASiZYOhKCnEvwd8uyiKoiiKxWJxOJzP... | iVBORw0KGgoAAAANSUhEUgAABZoAAAGCCAIAAADmOOFAAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydV3cc2XW2O+ecc0KOJMA4ybS0NJI8ti/spVtfeNm/y7/BS7K9bMnSyJphGAYQIMBG7m50zjnH7+JdOl+pATTAMEOAs58rEGxUVVedOmefHd7NH41GPIIgCIIgCIIgCIIgiOuD4ENfAEEQBEEQBEEQBEEQxJtB7gyCIAiCIAiCIAiCIK4Z5M4gCIIgCIIgCIIgCOKaQe4MgiAIgiAIgiAIgiCuGaK3/stms5lIJCqV... | null | null | null | Exploring the Reaction between FeCl_3 Solution and Fe
The group of students conducted the <image_1>experiment shown in the figure and observed that the red color of the solution faded after tube c was fully allowed to stand. Student B believed that part of the KSCN in test tube c also reacted. He took the solutions in ... | null | 1.05 | 化学实验基础 | che |
51068595-1_3-2 | iVBORw0KGgoAAAANSUhEUgAAAxoAAADwCAIAAAAIFYV8AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx/vHt1w/eu+gFAUsURQNFuwGI1as0a8htihqUFFR7ICKGuy9g0oUsCRWbNgbFrCCgvTOccDBtd2d3x+T3I8gINJOzbxfeeWFd7Ozs3M7s5995pnnwQEAGAKBQCAQCASivhDqbgACgUAgEAjE1w2SUwgEAoFAIBANAskpBAKBQCAQiAaB5BQCgUAgEAhEg0ByCoFAIBAIBKJBIDmFQCAQCAQC0SCQnEIgEAgE... | null | null | null | null | Preparation of anhydrous CrCl_3. CrCl_3·6H_2O reacts with SOCl_2 vapor to prepare CrCl_3. The device is as shown in the figure <image_1>(clamping and some heating devices are omitted). SOCl_2 has a boiling point of 76 ° C and is easily reactive when exposed to water. During the experiment, the connecting pipe needs to ... | null | Prevent CrCl_3 from cooling and solidification and clogging the connecting pipe | 化学实验基础 | che |
51068595-1_2-9 | iVBORw0KGgoAAAANSUhEUgAAA+0AAAFKCAIAAADnoyk7AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1wU1/438J1tsIWldxAQRUDFhi2Cxt47GmMS0RSvDWOJ0cTcRL0ao9FoNO2iMVeNiQUSI0pUbMEOioBKr4L0sgvb2zx/nNdvX/vsAqIiuvp5/wWzU84MC3zm7PecoWiaZvz/KIpiAAAAAADAC8M8tDOfU0sAAAAAAODJsZt7wTzyv5TIhw+vyMkCAAAAgQAAlqXJehn0xwMAAAAAWB7keAAAAAAAy4McDwAAAABg... | null | null | null | null | The group believed that a Cu(OH)_2 precipitate was formed in the experiment, and if ammonia water was directly added to the Cu(OH)_2 solid, the copper-ammonia complex could also be obtained. So 0.1g of Cu (OH)_2 solid was taken into a test tube, and 5mL of 2mol·L^{-1} ammonia water was added dropwise. It was found that... | null | greater than | 化学实验基础 | che |
51068595-1_2-4 | iVBORw0KGgoAAAANSUhEUgAAAvwAAABCCAIAAACkZZX0AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO29eXxU1d3AndkzWzLZJ8kkkz2Tyb6REPbNIBAFQZRiW5+K8mmtWmvVp8+ni31qa7W1z2OrT6tWBdHKIosgJIBAEhICCVnIvmcyySyZfd/vve8fv/e9n3knMImQQKvn+xfcubn3nnPPPed3fiuFIIgQBAKBQCAQiG861Hv9AAgEAoFAIBB3AyT0IBAIBAKB+FaAhB4EAoFAIBDfCpDQg0AgEAgE4lsBEnoQCAQCgUB8... | iVBORw0KGgoAAAANSUhEUgAAASYAAAD5CAIAAAAFuQ/DAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1QT2f/3M5NCCr0XRao0BQQFFVxXLKuiWFFW167YscGuXRa7FEVFEVEUC4oN7L2wdkVRlN57hxAgbWbu88f9bZ58AyoiSljndTwezYThZjLvufd+KgIAoJDIHwCAz3w1CIIgCPJjR0TSPtA6egAkLYDjOI7jEtXBvyUaQxAERVEqlUoKrzNCSk6+gDJ78+bNuXPnqqqqoNj4fH5dXZ2WlhaNRgMA0Ol0S0vLqVOn... | null | null | null | Adipic acid is an important raw material for synthetic medicines, pesticides, adhesives and spices. The preparation principle is as follows: <image_1><image_2>I. Add 9.0 g of potassium permanganate, 5mL of 1% NaOH solution and 50mL of distilled water into a three-necked flask, and heat to 40℃ with stirring. II. Add 2mL... | null | Filter off activated carbon to reduce the loss of adipic acid (prevent adipic acid from being separated out when cold) | 化学实验基础 | che |
51068595-1_2-1 | iVBORw0KGgoAAAANSUhEUgAABGsAAAA/CAIAAADYG9I4AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOz913dcV5rej6NyzjmggEIOBMEgUpmasdsz7Z4Z22v5xsvLa/n/8qWv7bma6dV2T49HlCg2JVEMIEhkoHLOOX8vPtb51Q8FFAtgSWK3z3OhRRXqnDrn7LP3fsPzPq9kMBjMiBAhQoQIESJEiBAhQoSICSD9pS9AhAgRIkSIECFChAgRIv5kIHpQIkSIECFChAgRIkSIEDEpRA9KhAgRIkSIECFChAgRIiaF6EGJECFC... | iVBORw0KGgoAAAANSUhEUgAAAgcAAADCCAIAAABSefZCAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wURxvAd3b3Ohzt6CIdVJqgqAiCorErxhI0GrvYu9GosfdeYwWxxIIFu9i7iIAiipWmAgdKL3dc2Z15P6zei4iECCqY/X/wJ3t7u3NbnmfmqQAhhLGwsLCwsGAYhmH49x4ACwsLC0stgtUKLCwsLCz/h9UKLCwsLCz/h/zeA2Bh+aGAEAIMwwAAAHzvsVQVhBCEEACA4+w0kYVdK3wC84ZQFEXTNOuKZ/lX0DS9... | null | null | null | Vanadyl basic ammonium carbonate crystal\{[VO(NH_3)_5][CO_3]_4(OH)_9\}\cdot10H_2O, with a relative molecular mass of 1065\} is purple-red and difficult to dissolve in water and ethanol. Its preparation and thermal analysis experiments are as follows. Answer the following questions: I. The process for preparing vanadyl ... | null | Faster filtration rates and less water content in the product | 化学实验基础 | che |
51214501-1_4 | null | null | null | null | null | The following chemical reactions that do not match the equation are | [
"Test for Fe^{3+}: Fe^{3+}+SCN^-→Fe(SCN)^{2+}",
"Condensation polymerization: \\ce{n HO-C(CH2)3OH ->[Catalyst] HO-C(CH2) 3O-}^{n}H^+(n-1)H_2O",
"Alkaline zinc-manganese dry battery: Zn+2MnO_2+2H_2O= 2MnO (OH)+Zn^{2+}+2OH ^-",
"Electrolytic treatment of acidic chromium-containing wastewater: Cr_2O_7^{2-}+6Fe ^... | C | 认识化学科学 | che |
51530505_3-2 | iVBORw0KGgoAAAANSUhEUgAAAaoAAAEgCAIAAABqxqAfAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddXwUx/vHd3bPJZeLuwMRAkmQIEmQ4G7FWiiFQinuVmihLVa8EKRAKcUKFHd3SJBAEkIg7i53l/OV+f2xkF+KfSkF7pLM+5VK7nY3s7uzn33meZ55BkAIMQQCgah74KZuAAKBQJgGJH8IBKKOguQPgUDUUTimbgACgXh/IITV3fc4jr/0CQAAAGCi1pk7SP4QiJoKwzCZmZlKpZIiSYIgLCwsvH18lApFTk6OkSRp... | null | null | null | null | Indirect electrolytic desulfurization
The schematic diagram of indirect electrolytic desulfurization is as follows: <image_1>When FeCl_3 is regenerated in the electrolytic reactor, the yield differs greatly from the theoretical value. The possible reason is_____. | null | A side reaction occurs at the anode, and water electrolysis consumes part of the current to produce O_2, so that Fe^{2+} is not completely oxidized, or the pH is inappropriate, resulting in the hydrolysis of Fe^{3+} to form a precipitate | 化学反应原理 | che |
51530505-1_3-5 | iVBORw0KGgoAAAANSUhEUgAAAlcAAAFxCAIAAADRRBplAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx/v4b3evcXBHLwJSRbEGu4LGEjRq1E+i0Ri7scQSxfKxG1vsYiyJvScSaxSwF4wVFbAXQBEBpffrt7fl98fz/ezrfqBoaFeY9x++8G5ud2Z2Z555Zp6CsSzLQyAQCASiToIbuwIIBAKBQBgNJAURCAQCUXdBUhCBQCAQdRckBREIBAJRd0FSEIFAIBB1FyQFEQgEAlF3QVIQgUAgEHUXJAURCAQCUXdBUhCB... | null | null | null | null | <image_1>Bipolar membrane was used to electrolyze Na_2SO_4 to prepare NaOH, trap CO_2 in flue gas to prepare NaHCO_3. It is known that bipolar films are composite films that can dissociate H_2O between the films under the action of direct current to provide H^+ and OH^-. When 2 \text{mol} e^-is transferred in the circu... | null | 4 | 化学反应原理 | che |
51530505-1_3-6 | iVBORw0KGgoAAAANSUhEUgAAA0cAAACiCAIAAAAFuSF4AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdZ1wU1/cwcKZsoXcEASkCiogdsSHdLhawIooVFUtQRGOPmiiJHU00Gis2REWFIPYuMRIVFVSKiPTedtnd2Zl5XtznN5/9g1265/sKltmZO7vDztlz7z0XY1lWCQAAAAAANHN4YzcAAAAAAADUAYjqAAAAAABaAojqAAAAAABaAojqAAAAAABaAvJrn/j5cyywrz0EAN8RxXlLGNbC/2u+q5MFAIAGg8EcWACaCJZl... | iVBORw0KGgoAAAANSUhEUgAAAeYAAAHaCAIAAABaSX1OAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOz9Z1wU1/v/j+/sbN8FloWlS1HAAihCsICimFgQKyh2E1s0JCZqNPYSUzQmdmJ7G1vsEbuiiF2aIIoUFUE6LHUXtu/szPxunO9n/vsHCyKd87zhA3dnZ86011xznasgJEnSIBAIBNIWoLf0ACAQCARSXxj/9wewtREajaTREINPDEGac2QQCAQCqQUCHSPtHpIkcRwHJxpBEPAJgiAoilLfgs/Bf2k0GoqiCIJQH751... | null | null | null | Ammonia is synthesized by magnesium chloride recycling process (MCC)<image_1>. Select NH_4Cl solid for conversion. According to the process of synthesizing ammonia<image_2>, the advantages of using NH_4Cl solid to convert Mg_3N_2 are as follows: () | null | High ammonia yield and high atomic utilization | 化学反应原理 | che |
51530505-1_15 | iVBORw0KGgoAAAANSUhEUgAAAoUAAAC8CAIAAACBoUPPAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO3deVwTx/8/8A2ECAlyCIqCHCoWWr/1KHjjVdRqi2hFRdEPeGsVxaNVP61KrRXBC/GWYhVRsRVEwaNVUYqAIuCFUFGpKBpAQa4QaBKS3x/z++4j3wTCAoH1eD3/gsns7uxOdt87s7MTjkKhoAAAAIBVOmwXAAAAABCPAQAA3gKIxwAAAOxDPAYAAGAf4jEAAAD7EI8BAADYh3gMAADAPsRjAAAA9nE1fMbhcFqxJAAA... | null | null | null | null | At 25℃, the ionization equilibrium constants of the three acids are as follows: <image_1> Generally speaking, if the equilibrium constant of a reaction is greater than 10^5, it is generally believed that the reaction can proceed more completely; if the equilibrium constant is less than 10^{-5}, the reaction is difficul... | null | can | 化学反应原理 | che |
52215163-1_62 | iVBORw0KGgoAAAANSUhEUgAAAbAAAACECAIAAAB+sOlyAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO3daVwT19oA8BnDlgiGHSvKohYRr6KyKUbBsiiIIGLdimiLClRqVVxwQdtaragVKrhcBLdStSy2ZVNRlAooCqEsCrIJGDYFJGBIJNu8Hya/3DTsEBPwff6fkjNnhmcykydnzjnDoBiGIQAAABBklKwDAACA4QISIgAACEBCBAAAAUiIAAAgINe1aPTo0bKIBAAAZGDKlCl5eXn4624SoqWlJYIgc+fOlXpgQJIeP378... | iVBORw0KGgoAAAANSUhEUgAAAHIAAAB4CAIAAAChJDFMAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAOaklEQVR4nO2dfVBU5R7HOS979oUF3WVBFm0hUJREFyWcalBCpAlFR80kJ70UZYbNtSlvk1czJ7gz1tVxRG00kcrUUa+KWmNKY5PlSzCUoaS8y7IrLwMussAuu+ec55z7x1Mb7Z7de2fqedZ753z+cvac4/Ple8553n+/Q4iiGCbzZ0OGWsD/J7KtSJBtRYJsKxJkW5FAS/4qiiLHcR6Ph+f5sLAwmqaVSiVN0yQZmtsgiiLP81CP... | iVBORw0KGgoAAAANSUhEUgAAAH4AAAB6CAIAAAD20HDJAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAL2UlEQVR4nO2df1BU1R7AOefe/cmPFQFdchFKnviqcZPETI2iQsNMFPlRwsNe2ZSTNQ5TSjo10z/aOKPFqzQdHvbeDJUK2ugQIT3pVQ4g+qJCXVoNheJXAq65uLv33nPeHye3bX+BBvfctfP5C/ae5Z79cO4537v3e78XYIzDGDTgg2zDGCOE3L+Ca8jSsRAGX8P9CgAAQujVLKD64eHh1tbW+vr6b7/99urVq0lJSQ8++OCCBQsm... | iVBORw0KGgoAAAANSUhEUgAAAHUAAAB1CAIAAAD/ZjnrAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAKV0lEQVR4nO2dW0wUWRqAqVtXNUg3IKyMtGAIATTjMj0OM2JUWpOZoI5OYuIiIhc16CaacV/QdXZNvDArk40xZDPeEIlMfDDjNSTMjhFax8CGaOSiqBm3sUEGEW37YkPXvfbhOG3bVDeb3Zwq2D3fE9Wnqvj761PnnK70/xemKEoMAhq43gH8j4P8wgX5hQvyCxfkFy7IL1yQX7iQUdoUReF5nud5URRjYmJIkqRpmiRJHEefSoyi... | iVBORw0KGgoAAAANSUhEUgAAAIcAAACECAIAAAA1Ea/zAAAACXBIWXMAAA7EAAAOxAGVKw4bAAALwElEQVR4nO2dfWwUdRrHOy/7vt3u0pctLT3b1JSlL1AsqBSF0G7xEOUkBKJcFEu5IxciV2tyRK1iE0OagomJBBXBHi85jWyIDRBor63WhQNFEVD6YqTtlr63sLtdut3dmfnN/TF3a93dmUUqnafk9wl/kDK7eeb5/N5mEr4leJ6PwQCDlLsATASwFYhgKxDBViBCy13A78bkYwtBELLWMlXuBys8z9++fXt4eHhsbIymaaPRmJSU... | The crystal structure type of FeO is the same as that of NaCl, and the ion radius data is shown in the table: <image_1>the top view of the FeO unit cell may be () | [
"<image_2>",
"<image_3>",
"<image_4>",
"<image_5>"
] | CD | 物质结构与性质 | che |
52215163-1_65 | iVBORw0KGgoAAAANSUhEUgAAAS8AAAEfCAIAAACfxtciAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wT2drAmckkk0khJDTpoIAoIgqKiopiF1xdu6JrL1hXXbuuva9dUNQF29rFrti72LBTRDqC9EAgpM/M++HczculGTCU5M7/gz9JzsycmcxzylMhkiQNKCgoGgFwQ3eAgoLiPyAN3QE9oewSA4KgBu0Lha5CSaMWEIvFQqFQKpVCEMTlcgUCAYqiDd0pCt2DksZaQpIkjuPJycmHDh2KjIwsKCiQyWQQBHE4nCZN... | null | null | null | null | The unit cell structure of a certain magnetic iron nitride is shown in the figure<image_1>. Let N_A be the value of Avogadro's constant. If the density of the crystal is ρ g·cm^{-3}, then the unit cell parameter x=()(expressed in an algebraic expression containing N_A and ρ)nm. | null | \sqrt[3]{\frac{728}{9\times N_A \times \rho}} \times 10^7 | 物质结构与性质 | che |
52215163-1_66 | iVBORw0KGgoAAAANSUhEUgAAAtwAAAFSCAIAAABOmZ8LAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1xO/f8H8OtzzjXbXV3tpaGhjYgoo4TEnbJJbnuPG6FktSSjItl7b7oLRYkUua2UUVRKe4+ra5zx++N8v/36ErdxleTzfNx/3Oo41zmX65zrdT7j/QEkSdIgCIIgCIJ+NuRnHwAEQRAEQRANhhIIgiAIgjoKGEogCIIgCOoQYCiBIAiCIKhDoP/sA4AgCIKgb0D+F/VHAACCwAfsNkSSJEEQ1P+39bsNQwkEQRD0... | null | null | null | null | Theoretical calculations predict that a new substance X formed of mercury (Hg), germanium (Ge), and antimony (Sb) is a potential topological insulator material. <image_1>The crystal of X can be regarded as formed by replacing some Ge atoms with Hg and Sbin the Ge crystal (unit cell shown in Figure a). Figure b shows a ... | null | \frac{4M}{N_A x^2 y} \times 10^{21} | 物质结构与性质 | che |
52215163-1_69 | iVBORw0KGgoAAAANSUhEUgAAAOoAAAEUCAIAAACqGT3EAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOxdZ2AVxdqeme2n9zQSQiCFIr3qVVFAPhWxe6/dq167iIpcEQtWLNdy7YKCihcLdilWUKkqUkMCAUJJ76ft2bNlZr4fG2KEEEIKoJ4Hfp1zdnd28+zMO295XkgpBQkk8McEOtoDSCCB9iNB3wT+wEjQN4E/MBL0TeAPjAR9E/gDI0HfBP7AYI/2AI5pYIw1Tdu5c+fWwsJAUtKAAQNsNhtCCEJ4tIeWAEjQtzVgjAu2... | null | null | null | null | The atomic numbers of elements A, B, C, D, and E in the first four periods of the periodic table increase in turn. For their ground-state atoms, A has the same total number of electrons outside the core as its number of electrons;B has 3 unpaired electrons in the valence electron layer;C has 3 times the number of elect... | null | H_2O | 物质结构与性质 | che |
51508642-1_3-2 | iVBORw0KGgoAAAANSUhEUgAAAz8AAADwCAIAAAChYU3oAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9eTxU7f/475zZ7IOSorIVN4kYSmmhJIl2JVKypOJu3/dF+2oJUUJSUqRN2ku7pJQKZS/ZmTHDmDlnfn+8fp/znTflbiGq8/yjR86cc65zrnMtr+u1XYhIJJIgISHpOEQiEY7jGIYJhUIul9vU1MRkMul0OoVCoVAoHf10JCQkJCSdDmpHPwAJyd8OjuPl5eVRUVHl5eXdu3dHUbSgoIDBYHh6euro6JACHAkJCQlJ... | null | null | null | null | Deuterated drugs are a research hotspot in the field of medicine in recent years. They refer to drugs obtained by replacing a deuterium atom (D) with a common hydrogen atom (H) at a specific site on a drug molecule. The synthetic route of a deuterated drug Q for treating tardive dyskinesia is as follows (some reagents ... | [
"A can form intramolecular hydrogen bonds",
"J and CH_3OH are homologous to each other",
"Chiral carbon atom exists in M",
"One of the characteristics of deuterated drugs is enhanced molecular stability"
] | BC | 有机化学基础 | che |
51508642-1_3-5 | iVBORw0KGgoAAAANSUhEUgAAA1EAAADeCAIAAABT6R1tAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1QU19vAmdm+7NJ77yIdBaSIoAIW7BJNBHuiWMHYIpbYFUVEjNGIvUZii11BsWFXVJCigNKk9wW2zcz74TnvnD2LIiLN/Of3CXZnZ+7cuXPvc5+KEAShQEFBQUFBQUFB8Z8G7eoGUFBQUFBQUFBQdDiUzEdBQUFBQUFB8d+HkvkoKCgoKCgoKP770Lu6ARQUFBQUFBQtIZVKpVIpjuMKCgoIgqD/D3yIoiiDwVBQ... | iVBORw0KGgoAAAANSUhEUgAAAbwAAAA5CAIAAADC2AlXAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAVu0lEQVR4nO2de1AT1/fAd0NASMJDpAVCISBFo4xih4c6PoCBkaqAgvio0wIWsRTtqGWq4lC1YhUcHSuoMD5qCaUyClJklBkVxVfrIxEQoTzKCAKJWMREYuKEkPz+uDP7zW93s2RDICj38xfsnr179p7ds3fvPecE1Wq1CAQCgUAMg2FuBSAQCOR9AjpNCAQCoQF0mhAIBEID6DQhEAiEBtBpQiAQCA2g04RAIBAaQKcJgUAgNIBO... | iVBORw0KGgoAAAANSUhEUgAAAXYAAABXCAIAAACfu/kVAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2de1xM+f/455y5T00z09R018WltKnIxiqLlZRcK5bNhnXbJdrWpfajJXJrUWtFq7SkzdK2IksIG2GTsNSWSlR0V02XuZ/L94/35ze/+XTbUGaG8/zDIzPn8nrPvOd1Xu/X7Q3hOE4iICAgGBhgdQtAQEDwLkOoGAICggGEom4BCLoHx3GwhoUgCIIgdYtDQPCaECpGs8BxHEVRDMOamprKy8sxDDM3Nzc1NaVQKGQy... | null | null | Claritane is an important desensitization drug that can be used to treat various allergic diseases such as allergic rhinitis and urticaria. The synthetic route for the precursor K of Claritane is as follows: <image_1>known: i. <image_2>ii. <image_3>During the process of I→J, SeO_2 is transformed into compounds containi... | null | 3:1 | 有机化学基础 | che |
51508642-1_3-10 | iVBORw0KGgoAAAANSUhEUgAAArcAAAB+CAIAAACxh651AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddzzV7f/4z/t9lnOOPY4VKSstQqioJE00NNBwN6Xu6pZKU9pL2hoainZpKrnvotRdbi2SSkVlZM/DWe/x++N6fN6/80Xd6jYOrudfvNe53uO6rtf1mghJkjQIBAKBQCCQeqCt3QAIBAKBQCByCpQSIBAIBAKBNAyUEiAQCAQCgTQMlBIgEAgEAoE0DJQSIBAIBAKBNAyUEiAQCAQCgTQMlBIgEAgEAoE0DJQSIBAI... | iVBORw0KGgoAAAANSUhEUgAAAqMAAAB1CAIAAAD1BX8kAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ1xUR9fA997tnbJ0VEBFOiIqATt2E8WoBNuTIpYYC0bFWFBjwS62x5JEjVFREbGgwYYYC1aKWBCQKh0Wlrb9lvfDvM/9bRYwRikC8/8Et87cnTln5syZcxCSJGkQCAQCgUDaKWhrFwACgUAgEEgzAjU9BAKBQCDtGajpIRAIBAJpz0BND4FAIBBIewZqeggEAoFA2jNQ00MgEAgE0p6Bmh4CgUAgkPYM1PQQCAQC... | iVBORw0KGgoAAAANSUhEUgAAAhIAAAFcCAIAAAAS5cBpAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1RU19bA59ypTIEZYOh96E0UsFBEUVGjaDQqxN6i0RhjLLGnqZj3ook9sUexxxpFsRdAwYKioFRFeu/Tb/n+OC+z+BARcJgZ4P5WlmtlmLl333vKPmfvffYGBEFQSEhISEhIWgeibQFISEhISDoTNG0L0Aw4jqMoWldXx+PxmEzmB78sk8mqq6sJghAIBGw2GwCgKUlJSEhIuh06pzYIghCLxbt377506dKmTZt8... | iVBORw0KGgoAAAANSUhEUgAAAhMAAACTCAIAAAC77gyCAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO29eVxO6f/43znnXrvb90UrIUqyU4SxG6OxDlGTbFkLgxgkaexmypBIJEaTZF+yF9kVIUl7Wu+79d7v+5zz++P6vs/vfO6SIipzPf/w0DnXue7r3Pd1rte5XitCkqQaBAKBQCBNBm3tAUAgEAiknQElBwQCgUCaB5QcEAgEAmkeUHJAIBAIpHlAyQGBQCCQ5gElBwQCgUCaB5QcEAgEAmkeUHJAIBAIpHlAyQGBQCCQ... | null | Ethephon is widely used to increase crop production and storage. A method for preparing ethephon is shown in the figure<image_1>. Data: The mechanism of the rearrangement process is as shown in the figure<image_2>. The purity of ethephon can be determined using the following method.
Known:
i. Ethephon can release ethy... | null | \frac{14.45bV_{2}\%}{a} | 有机化学基础 | che |
51508642-1_3-11 | iVBORw0KGgoAAAANSUhEUgAAA04AAAGpCAIAAAA1HPHFAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1jUWNfAJ8k0mKH33lFABEFQFEFEsQKKgA0BXctasPeGFXRx7QVUBEVBXRWxADbsYgMVBAtFRZDeYXqS74/7Ot8sNhSUsvf37LMPZpLck5ub5NxzT0FIkqRAIBAIBAKBQDojaFsLAIFAIBAIBAL5VUBVDwKBQCAQCKTTAlU9CAQCgUAgkE4LVPUgEAgEAoFAOi3UthYAAoFAIBAIpJ1CfoJCoSAIgqIdz0YGVT0I... | iVBORw0KGgoAAAANSUhEUgAAAl4AAAB1CAIAAAAQt3gNAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ1xUR9fA95btuyx96SBKQOliw4JALFGjgEHFEo0GY42KvUSwt9iixohoVGxPNLZHLIidBOwFFbHQe1lc6u7eveX9ME/2XSlGcWk6/58f3L3Dzrlz554zc+bMGYRhGBYEAoFAIJB/QJtbAAgEAoFAWhbQNEIgEAgE8hbQNEIgEAgE8hbQNEIgEAgE8hbQNEIgEAgE8hbQNEIgEAgE8hbQNEIgEAgE8hbQNEIgEAgE... | iVBORw0KGgoAAAANSUhEUgAAAXAAAABLCAIAAADmsUuyAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2deVxTV77Ac+/NHggJCRCJwLCLiguouKFYHUGsYh21am3HHR8+rc9W2pm61X0cW3VaN7StLePSWivisCn6dFoUC4gLggJV1qDIEpKQ5a7vj/PmflISFJFgpef7F+Tce8/JvSe/+zu/7SAMw3AgEAikK0Bf9gAgEEjPAQoUCATSZUCBAoFAugwoUCAQSJcBBQoEAukyuN3TDcMwNE3TNA3+RRAERVEEQRAEYY8BrazX... | null | null | The synthetic route of Olaparib J, a polyadenylate ribose polymerase inhibitor, is as follows: <image_1>known: i. <image_2>ii. <image_3>The following statement is correct is______.
a. An isomer of A can undergo both silver mirror reaction and color reaction in FeCl_3 solution
b. H can react with NaHCO_3 solution
c. The... | null | bcd | 有机化学基础 | che |
51508642-1_3-13 | iVBORw0KGgoAAAANSUhEUgAAAz8AAAEyCAIAAABbNvnjAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1QUSffwmZ4AAwxDzlGCJEFUQAwgAqKIGRMKimtOBHVRzNkVZE2AuiprRlwTKJhRiQZEDAgmQJAkmWFiT/f74Z5/n3nBZVFQ4LF/HzjQzFRXd1dX3bqRguO4FAkJCQkJCQkJSQ+B1tUdICH5ChiGicVisVgsJSWFIAiNRkMQpKs7RUJCQkJC0i0gpTeS7gWGYUKhMCsr6+XLlwiCYBjG4XCMjIxGjBihpKREoVC6... | iVBORw0KGgoAAAANSUhEUgAAAWEAAABNCAIAAAD4hEJ5AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2daVwT19rAmZksGCCBkGDYhIIgi4oFKVq3asVKq+h1wQ1siyjaK7a1VuvObRXkqqgobl1stYq4IIqguFQUqELrghVRRFkMECBsISHJrO+H83ZuCpSCIgk4/w/+ZDIzOTOZec5znhWiKMqIgYGB4W+A9T0ABgYGg4aREQwMDO3ByAgGBob2YOl7AP8PRVEUReE4rlQqFQoFj8ezsLBgsVgQBOl7aAwMrzUGISMoiiII... | null | null | null | Cyproprotricid is a broad-spectrum insecticide. The following partial conditions of the synthetic route are omitted): <image_1>Known: <image_2>The following statement about E is correct is______(fill in the serial number).
a. Contains 3 oxygen-containing functional groups
b. is cis-structure
c. 1 mol of E can react wit... | null | ad | 有机化学基础 | che |
51508642-1_3-14 | iVBORw0KGgoAAAANSUhEUgAAA04AAAFJCAIAAAAjWOpHAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wUV7z3mdnKLrD03ouCoGAHxCAgigpYYkPFgkqwY0FRRIKoscQShWDHEAsKBuxiwYaCoKKgWCiCSJNelm1Tnhfn3nn2AhJUlJLzfZFPHGZ3zpQ95zf/ipAkKQOBQCAQCAQC6YmgnT0ACAQCgUAgEMj3Ako9CAQCgUAgkB4LlHoQCAQCgUAgPRYo9SAQCAQCgUB6LFDqQSAQCAQCgfRYoNSDQCAQCAQC6bFAqQeB... | iVBORw0KGgoAAAANSUhEUgAAAacAAABaCAIAAACT9g68AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ1wUV9fAmZmt9C6wIF2qIDZABQQpiliiBInGEjU2MFYsiRRbREWs0WBLrEHsSozGigYkCNKkSFGk10Xa1invhxvn2XdBBN0Fkf1/8Ie7O3PvzNw599xzT4EIgpCTIUOGJMBxHMdxCIJgGIYgqLe7I6NjKL3dARkyPl860QnaCzWCIAQCQUJCAo1Gc3FxoVBkL9dniuzByJDRATiO19bWNjU1CYVCUvZBEIQgCJPJ... | iVBORw0KGgoAAAANSUhEUgAAAkMAAACrCAIAAADq0w8KAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1xUR/v392yvsHTpvYiKIKJYwS6CUUQRK0ZjixqMGkuMNbErsYG9IIolFizYC9EgiaKoiIDSm/QFtu9pz4v5Zx9uWlARdnW+L/zg7jln57T5zVXmGoQkSQoEAoFAIFoLvb0bAIFAWg2SJNVjUwRBEARp7xZBIG0BVDIIROsBAkYQBEEQaiWjUqlUKhX8jSCI+u96O4JdwF5A/KhUKoIg6mPWlUbwFRRIiKYBlQwC... | iVBORw0KGgoAAAANSUhEUgAAAgcAAABRCAIAAADJi5KvAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO19eUBN6f9/59y1275HiUQZW4uESpaQtCBbKCLJmqwVEyYjY8uePQwjGcuQhibDWKYsqUS0SUWLFtq72znn98f78ztzv7e63epG5bz+oHvuuc95nuc8z/N+nvfyeiMEQchRoECBAgUKcnJycnLot64ABQoUKFDoQKCkAgUKFChQ+A+UVKBAgQIFCv+B/q0rQIFCi4HjOI7joiYxFEVpNBr8TRAE3CChBBRFURRFEIQs... | iVBORw0KGgoAAAANSUhEUgAAAm0AAABdCAIAAAB4jMZtAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dd1xUR9f4udsXWHqTKiCKWMBGsTewERWJRhTfqNiwG3uveWIsT1SwRo2FGI3Ye9eIiqIoioLSe2eXha23/f44z++++y6w4gpo8sz3Dz949869M3Nnzpk5c+YMRtO0AQKBQCAQCL1gfekMIBAIBALxNwbpUQQCgUAg9AfpUQQCgUAg9AfpUQQCgUAg9AfpUQQCgUAg9AfpUQQCgUAg9AfpUQQCgUAg9AfpUQQCgUAg... | Abscisic acid is a hormone that inhibits plant growth. The synthetic route of its derivative I is as follows<image_1>. i. <image_2>ii. <image_3>Based on the principle of the above synthetic route, using the raw materials, the following route is designed <image_4>to synthesize the organic compound N. The simple structur... | null | \mathrm{Cr}^{2+}、\mathrm{H}^+ | 有机化学基础 | che |
51508642-1_3-16 | iVBORw0KGgoAAAANSUhEUgAAA04AAADJCAIAAACbn/UrAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddyBWbfz/73PuxW3LzEpURqgooVSI0FQyokWLVCql8WiJBorS1FBaGhrPUzQ1lYZK9WgPhKyse59zfn98vt/7d3+pnp4i9Fyvvzjzus+4rvf5XJ+BURRFQyAQCAQCgUD8juCt3QAEAoFAIBAIREuBpB4CgUAgEAjEbwuSeggEAoFAIBC/LUjqIRAIBAKBQPy2MFq7AQhEG4KiKJFIxOPx3r59y+fz9fX1VVVV6XT6... | iVBORw0KGgoAAAANSUhEUgAAAlIAAABpCAIAAAB+n1pjAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dd1wUx/v42b29Xui9iTQFxS42iCWKUbBFJZYYa0zsRv1YiDGxG5NoijFGjQ01ClHErtgFEVAUlIAivYMIB1f3bvf3x/P57Pd+dweCosTcvP/whXd7O7OzM/PMU+YZjKZpMwQCgUAgTAO8tSuAQCAQCMTbg2jtCrxtaJqmaVqr1VIUZWZmhmEYjuM4jmMYhmFYa9cOgUC0PMyo12g0FEWBiYvFYhEEwWKx0Ng3NUxL... | iVBORw0KGgoAAAANSUhEUgAAAzsAAAEgCAIAAAAcw/oJAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx/v42b0Kd/R+dEQUqZpYUEEFFTF2FIIQIIINe2xoMMaKJWiwocYuqEQFBSNKUFFEARUrFpAuChztuOP67f7+mNdnv/c7imikz/sPX3g3OzO7NzvzzDNPQXAcV4JAIBAIBAKBdGHQzu4ABAKBQCAQCOQzQIkNAoFAIBAIpKsDJTYIBAKBQCCQrg6U2CAQCAQCgUC6OlBig0AgEAgEAunqQIkNAoFAIBAIpKsD... | null | null | Compound K has antihypertensive activity and its synthetic route is as follows<image_1>. It is known that <image_2>D can also be prepared from m-nitrotoluene by electrolysis, and the transformation relationship of the main substances is as follows<image_3>. It is known that the definition of electrolysis efficiency η i... | null | 4a \times 100\% | 有机化学基础 | che |
51530506-1_3-01 | iVBORw0KGgoAAAANSUhEUgAAAQsAAACTCAIAAAAWdaufAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dd1QUVxfAd2a2N3rvXbqg2EDEDmIXY9doYhc1lihqDPYejb2h2BJj1NhLbNGICNYoXaR3ls62ae/7YxI+QlmR7LKL7u8k5yTssHN5M/e9++67BQIA0LRo0dIMsLoF0KJFo9FqiBYtitBqiBYtitBqiBYtiqCrWwA1QzkqAADUf8AQRIMgCILULZcWTeGz1hAAAIZh2VlZ6e/Ty0RlbA7H1sbaydlFKBRqlUQLxeer... | null | null | null | null | Potassium magnesium fluoride (KMgF_3) is a material with excellent optical properties, and its unit cell structure is shown below <image_1>. Based on this unit cell structure, similar ions can be substituted or partially substituted to synthesize various new materials. The radius of Fe^{3+} is close to that of Mg^{2+},... | null | \frac{1}{10 a^3} | 物质结构与性质 | che |
51530506-1_4-01 | iVBORw0KGgoAAAANSUhEUgAAASkAAACuCAIAAADlOWwBAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd0BUZ773T5kzfYYy9I50aQqKAvZYYmyxd2OJRs3uZve2vdncfbfeLdlNboqxpzejxpYYjQVBQVCUJiC9txlmmD6nP8/7xyQsAURUhEHn8ydznsNvzpzvU38FhRAiTpw4GXYEI23AQ8LzvNVqNZvNJEmyLAshFOACkVgkl8sVCgVBECiKjrSNowMIYc+HybEcgiI4jovFYoVCIZfJCKFwpG18MunWHkQQFEH6HQMd... | null | null | null | null | Iron (Fe), cobalt (Co), and nickel (Ni) are Group VIII elements in the fourth cycle, called iron elements. Related compounds are widely used in scientific research, production and life. Metallic nickel and its compounds are widely used in synthetic materials and catalysts. A crystal containing three elements: Ni, Mg an... | null | \frac{213}{N_A \cdot a^3} \times 10^{21} | 物质结构与性质 | che |
51530506-1_3-3 | iVBORw0KGgoAAAANSUhEUgAAAgAAAAFcCAIAAAAxvpG8AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOxdd3gUVffeqduzu+khCQkhvZBAQgkloQgioAIiRRQR+AmioqIfih/SFBFFBESwIiKI0nsNBEJoaaT3hPSeTbbvTv39ccJ+kRISupiX58kTZid37szu3nPPOe95D8LzvKATnehEJzrx7wP6qCfQiU50ohOdeDTAH/UEHj1YllWr1TqdzmQy8TxPkqRMJlOpVCKRCEGQRz27TnSiE514UPhXGwCTyZSdnZ2Tk5Oenl5a... | null | null | null | null | Iron ferricyanide dihydrate Fe\left[Fe(CN)_{6}\right]\cdot 2H_{2}O can be used as a cathode material for proton batteries. Its unit cell shape is a cube, the side length is a nm, and the structure is as shown in the figure<image_1>. It is known that the molar mass of Fe\left[Fe(CN)_{6}\right]\cdot 2H_{2}O is Mg·mol^{-1... | null | \frac{4M}{N_{A}\left(a^{3}\times 10^{-21}\right)} | 物质结构与性质 | che |
51530504-1_3-4 | iVBORw0KGgoAAAANSUhEUgAAA9UAAAGPCAIAAADdomTwAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdZ1wT29Yw8IQklNBBQAQEFVRAsSBiPSIiYuNYsHOwYRcRFSsqem3YBctRERVBUcFCExEFFZVeJVSl95ZAQkLq+2E/d975JYCIyil3/T/BtOwpyazZs/beRJFIRAAAAAAAAAD0Cqm/ugAAAAAAAAD8DyF3OJVIJPZ6SQAAAAAAAPiX6CLHpOP4+5ur/fsQicT/qf0FAIAegx9MAADowjcrsiH/BAAAAAAAgN4D8TcA... | iVBORw0KGgoAAAANSUhEUgAAA7YAAAFeCAIAAAA+EBQJAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdeUBM+/s48NlrpmlP+y5LsiSVRK5CRNYbciNcXPsSQoR7XWQrO/e62bLFRdpUlpBCWqgYRXvaa2pqpplmO78/3t/P+U3TIsrFvc/rr+bMOWfOOc2c85z3ed7Pm4hhGAEAAAAAAADwP6SvvQEAAAAAAAB8WyBEBgAAAAAAoAUIkQEAAAAAAGiB0noSkUj8GlsCAAAAAADAV4b66bURIsu+/R+E7hD+s7sPAAAfBedJ... | null | null | null | A chemical group explored the reaction of ammonium ferric sulfate [NH_4Fe(SO_4)_2] with Na_2CO_3 and Na_2SO_3<image_1>.
Data show that Fe^{3+} can oxidize SO_3^{2-}. Aiming at the phenomena in Experiment II, the group designed and implemented the following <image_2>experiment.
Explain the possible reasons for the diffe... | null | The rate of reaction Fe^{3+} + HSO_3^- \rightleftharpoons \left[Fe(HSO_3)\right]^{2+} is greater than the rate of redox reaction between Fe^{3+} and +4-valent sulfur; in Experiment II, Na_2SO_3 was excessive and c(Fe^{3+}) was low; In Experiment IV, Fe^{3+} was excessive, c(Fe^{3+}) was higher, the rate of redox reacti... | 化学反应原理 | che |
51530504-1_3-6 | iVBORw0KGgoAAAANSUhEUgAAAxIAAAN+CAIAAAAOkKq9AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9f1wTV77/n/BDfiX88lcTfkQrFcUqaKJiVyW06pbdBrSb7lVrSauP3VpBdrvsfoKtdrvSraHd9FoVtNulFdqqvWZBEru0SgWtW1ASBa1o0FsblIxUq8AMIAjk+8f7e8+dO/nhELTW9v38g0eYnJk5OXPmzOu8z/v9HqHD4RAgCIIgCIIgt8PnXlcAQRAEQRDk/gBlE4IgCIIgCC9QNiEIgiAIgvDCj/2PUCi8dzVB... | iVBORw0KGgoAAAANSUhEUgAAAe8AAADJCAIAAACFaS0FAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx///b3evcZTj6B1RkaIgUq2xVywgUVBULFhiCdZoEBtYsEQUFTUqUbBgAQsqKgZULMEKoiKIgPQOB1zd9vtjvrnffQCJsaFkno888pC9LbO7s695z3ve8x6EpmkGBAKBQL5z0LYuAAQCgUA+A1DNIRAIpD0A1RwCgUDaA1DNIRAIpD0A1RwCgUDaA8wP3pNmMJC//6EM8rmLBIFAIJB/zYerOdLsHxAIBAL5... | null | null | null | To explore the differences in preparing different metal ion monoamine ligand solutions, the experimental operations and phenomena are as follows:<image_1>
Data: ① The concentration of saturated ammonia water is about 14mol·L^{-1}
②Co(OH)_2 is a light blue precipitate
③ The [Co(NH_3)_6]^{3+} solution is red and is conve... | null | The precipitate dissolved in tube 1, but not in tube 2 | 化学反应原理 | che |
51530504-1_3-9 | iVBORw0KGgoAAAANSUhEUgAABesAAAHpCAIAAACdgPB/AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzd13MbeXYvcHRAaOQcCBLMmSKpMMqa0cxO2vVMrddlb63LLj+4ylX+M/zgVz/6zS7bLw61vrtVmybsTpBHI42yRIk5B4BEzrHTfTi1fXHBII1WI0Hy9/OgokCg0QBY7Oa3z+8cRlVVHQAAAAAAAAAAtDH2Re8AAAAAAAAAAAA8BhIcAAAAAAAAAIB2d3CCoy2tUlUVy6wAAAAAAAAAAF4sXvuq0Wgkk8lyufxC9wcA... | iVBORw0KGgoAAAANSUhEUgAAAbkAAABdCAIAAAC3lI9fAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO19d1yWZds/997sjUxFEcUNbskBbiE1TdOcqZXko0+aWaZZ5mhomqm5NwhWirgVB+IIUEBAmbI3997r98f3fc73fm9KLB/Bfl3fP/jccF9c13md4ziP8T2Ok2Y2m20oUKBAgcIzQW/rBlCgQIHC3wCUrKRAgQKFlkHJSgoUKFBoGZSspECBAoWWQclKChQoUGgZlKykQIEChZZByUoKFChQaBmUrKRAgQKFlkHJSgoU... | null | null | null | An experimental group explored the reaction between SO_2 and K_2FeO_4, and the experiment was as follows.
Information: i. K_2FeO_4 is a purple solid that is slightly soluble in KOH solution; it has strong oxidizing property, rapidly produces O_2 in acidic or neutral solutions, and is relatively stable in alkaline solut... | null | After SO_2 was continuously introduced for a period of time, the acidity of the solution increased, and the generated H_2SO_5 oxidized the HOFeOSO_2 in the orange solution | 化学反应原理 | che |
51530504-1_3-14 | iVBORw0KGgoAAAANSUhEUgAABWcAAAJ5CAIAAABNNxUuAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdV3Bc53k/fmzvvWMXvffGLlKU2ETLkq2RFNlynIky83P+8Z1nMpPxRe5jT0YzyeQqk2RiJ/5HSUZ2YluNlEQVigRICEQlClEWfRu217N7zp7/xfPPyf4WS4iSIAEUv58LDQXsnj17cMr7Pu/7Po/o7bffvnz5chUAAAAAAAAAwP9NfNA7AAAAAAAAAACHFKIGAAAAAAAAAFAZogYAAAAAAAAAUJm09H9Ylk0kEgzD... | iVBORw0KGgoAAAANSUhEUgAAA+cAAADICAIAAAAFjgeVAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdeyAU6/84cIt1jxBRShdSUikViqOO7nRDpRIJJdGJktPpftJFJym3SuWUEmEplyiiUG4hRBeE0LLu7Frsrvn98Xy/853fYqOc83E+5/36y46Z2ZnZmWfez3ue5xkShmF8AAAAAAAAgBGM/z+9AQAAAAAAAIBvgKgdAAAAAACAkQ6idgAAAAAAAEY6iNoBAAAAAAAY6SBqBwAAAAAAYKQTxP8ikUj/0S0BAAAAAAAA... | null | null | null | A research team explored the reaction between Fe^{3+} salt solution and Cu and conducted the following <image_1>experiments.
Information: i. \text{CuCl and CuSCN are white solids that are hardly soluble in water};
ii. \text{Fe}^{2+} + \text{NO}_3^- \rightarrow [\text{Fe(NO)}]^{2+} \, (\text{Brown}).
The color of the so... | null | 20\text{mL NaNO}_3 \text{and HNO}_3 \text{mixed solution [pH approximately 1.3, c(NO }^-\text{)=1.5 mol/L]} | 化学反应原理 | che |
51530504-1_3-20 | iVBORw0KGgoAAAANSUhEUgAAA7cAAAGhCAIAAAA1FtT7AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdeUBMa9w48DM1k5pGJYkslcpSEVkSSReRhFJZr1tcW9rIUrZruTcp5ErWhCtLSZtEIUq60UakPS3SpnWqmcls5/fH83vPO+9pMZLLdb+fv5ozz3nOc5Y5fc9znoWC4zgGAAAAAAAAECHxrQsAAAAAAADAdweiZAAAAAAAAMggSgYAAAAAAICM2s13FArlHywJAAAAAAAAX52YvfKgLhkAAAAAAACy7uqSERgEo2dQ... | null | null | null | null | Study the reactions between magnesium strips and different alkali solutions<image_1>
\text{Description: } \romannumeral1. \text{In the experiment, all magnesium bars have been polished off the surface oxide film with sandpaper} \\
\romannumeral2. \text{No CO was detected in any of the gases generated during the above e... | null | The amount (rate)(or the degree of reaction) of H_2 precipitation when Mg reacts with aqueous solution depends on whether Mg(OH)_2 can be destroyed | 化学反应原理 | che |
51006754-1_2-5 | iVBORw0KGgoAAAANSUhEUgAAAYgAAAEFCAIAAAB2D+d3AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx/vHZ7bcHRwdqYIUFRURFAvYe8EWu8EWa8xXjbHFRBNrYosaQ0RjiWAPdr8xiSXYjRpR7KKItNCVDlf2dmd+f0y8H19ERbw77mDff/iSu73dud25zzzzzDPPAzHGQERERMSYoKq7ASIiIiLlEYVJRETE6BCFSURExOgQhUlERMToYKq7ASLvAMa4pKSE4zhBECiKkslkZmZmAACFQqFWqxFCNE3LZDJzc3MI... | null | null | null | null | At room temperature, 10mL of a mixed solution of NaOH and Na_2A with a concentration of 0.20 mol·L ^{-1} was titrated with H_2SO_4 standard solution with a concentration of 0.10 mol·L ^{-1}. The distribution fraction of A-containing particles in the solution varied with pH and the titration curve were as shown in the f... | [
"HA^- \\rightleftharpoons H^+ + A^{2-} \\text{of} K \\approx 10^{-1.4}",
"\\text{Point a: } c(SO_4^{2-}) < c(A^{2-})",
"V_1 <15\\text{mL}",
"\\text{Point c: } c(H^+) + c(Na^+) = 4c(SO_4^{2-}) + c(OH^-)"
] | D | 化学反应原理 | che |
51508643-1_3-03 | iVBORw0KGgoAAAANSUhEUgAAAycAAAC3CAIAAACHRbYgAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9d1xT1//Hn5sdIIyEEbZsBEQQlL0RxYmoOKtWWwe17mqtde/aWltr1VprtVpn3VsUUBCQISIb2RBICJAA2bm5vz/O75dfvglQBwr2c55/+JCTm5tzb8Z93ff7fV5vBMMwHAQCgUAgEAjkPYPv7wlAIBAIBAKB/E8AVRcEAoFAIBDIhwCqLggEAoFAIJAPAVRdEAgEAoFAIB8CqLogEAgEAoFAPgRQdUEgEAgEAoF8... | iVBORw0KGgoAAAANSUhEUgAAAYMAAAEpCAIAAAD+gdnNAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeUAN6//4z8yc/bTvu1aURBupCCG6ki1deyERsi+5LsJ1yZIQki1LIpdru9asNyFLkrKTNqX9nM46M8/vj+dzz+98K6lUp+W8/rhXM3Oeeeacmfe8n/eKAAAoChQoUCBXUHlPQIECBQoUkkiBAgWtAIUkUqBAgfyhyvHcEomkuLi4uLiYTqfr6+tzOBwMw6R7AQASiSQ/P5/L5RobGysrK8vuVaBAQXtCPpIIACAU... | iVBORw0KGgoAAAANSUhEUgAAAZIAAADhCAIAAABtIaR2AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd3wTRxr31WUVSy6S5d4rxRUDBpsOoZOj5CgXQg4SCARyDoGEHCUJKSQBEiAJJEdICL0F04sxGMfGuPeK5SZbtqwuq1la7b5/zHv76pULBkwRN98/8gm7s7PT9jfPPPOMRcQwjACBQCD2A6WPe0Qi8RmWBAKBQP4/ejOq+pKtvp+E4MoOmwgCGVj6tplIz7AkEAgEMgBA2YJAIHYGlC0IBGJnQNmCQCB2BpQtCARi... | null | null | The flow chart is as follows to produce pure copper from chalcopyrite (the main component is CuFeS ˇ, containing impurities such as SiO ˇ)<image_1>. The ore and excess (NH) ˇ SO are mixed in a certain proportion, taken the same mass, and roasted at different temperatures for the same time. The changes in ammonia absorp... | null | When the temperature is lower than 425℃, with the increase of calcination temperature, the\(SO_3\) produced by the decomposition of\(NH_4)_2SO_4\) increases, and the content of\(CuSO_4\) in soluble matter increases, so the copper leaching rate increases significantly. | 常见无机物及其应用 | che |
51508643-1_4-04 | iVBORw0KGgoAAAANSUhEUgAAAz8AAAEsCAIAAABi6poIAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1xT1/84/txMCEnYYUUIUzaCgDJkSBFFFGfrqqVWrXvbqlVLW1vfbdXWQW3rbqsW0LrqxgkCgoJA2CsMA2EEkpCErHt/f5zHN5/8wihaEbTn+UcfcHPvzUmk5MU5r/N6IRiG4SAIgiAIgqA3BH6oBwBBEARBEAS9ABi9QRAEQRAEvUlg9AZBEAQNluTk5Pb29qEeBQS9bYhDPQAIgqC3QW1tbXp6eltbm5eXV0hI... | iVBORw0KGgoAAAANSUhEUgAAA0UAAACiCAIAAAABTPFFAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9eXAcZ53/r577vi+NNLrvy5Zt2bFsx3ZM4hxOIAkEQgghGyqwBcUu7MKyW7XL3kXBArtLQS0QtsJCwpHg2HEOn/IRH7ItyZZ139fco7mvnpk+fn986jffqRlJliVb0pjP6w+X1dPT0/109/O8n8/1ECzLFiAIgiAIgiB5Cy/zD4Ig1u9MEARBEARBkOWSaZLjrOuZIAiCIAiCIKuFl7vpPvbAEgRxH1/dhgXsvtjy... | null | null | null | A process for extracting substances containing Ni, Cu, Fe, Mg, and Al-containing from a nickel ore resource (the main components are NiS, SiO ˇ, containing a small amount of CuS, FeS, MgO, Al ˇ O, Fe ˇ O) is as follows:<image_1>
Information:
i. At 25℃, the\(K_{sp}\) of some substances are as follows:<image_2>
ii. When ... | null | d | 常见无机物及其应用 | che |
51508643-1_1 | iVBORw0KGgoAAAANSUhEUgAAAlUAAABjCAIAAAA92GJ8AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOx9eVxM+/9/58xMM9O0TvseURSyJLIWsis3spSbULKLuPZ7ucqWCFfJdtElS4kbriJESESUKJX2mmpKU7Oe7fvH+/E7v/nMVEL28/zDI3Pe531e7/X1er+2N0QQhAoFChQoUKDwkwH+2gRQoECBAgUKXwEU/6NAgQIFCj8j6F+bAAoUPgsIgoAgqLVHKioqrT1tZzGCIBQ+8d4KKVCg8E2B4n8UfkAQBIHjOARBMNyC... | null | null | null | null | The industrial process for preparing calcium carbonate from dolomite (the main components are calcium carbonate and magnesium carbonate) is as follows<image_1>. It is known that at room temperature,$\text{Mg(OH)}_2$:$K_{sp} = 5.6 \times 10^{-12}$;$\text{Ca(OH)}_2$:$K_{sp} = 4.7 \times 10^{-6}$.
The recyclable substance... | null | \[ \text{NH}_3、\text{CO}_2、\text{NH}_4\text{Cl} \] | 常见无机物及其应用 | che |
51508643-1_4 | iVBORw0KGgoAAAANSUhEUgAAAtMAAABlCAIAAAAAmvgnAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddVwU2/v4mQ126S5pQcQiBREBEUVQMADFRBELE1EsQkTFAMXAuKKCimLHtRVRQBpBRBaQkJDuWNie+f1xft957WcXVkSMe++8/9o9c2bmTJ3znOc8ASEIIoSBgYGBgYGB8UvA/e4GYGBgYGBgYPyHwCQPDAwMDAwMjF8HJnlgYGBgYGBg/DowyQMDAwMDAwPj14FJHhgYGBgYGBi/DkzywMDAwMDAwPh1YJIHBgYG... | null | null | null | null | The method for measuring the purity of $Co_2O_3$product is as follows: <image_1>It is known that $Co^{3+}$reacts with EDTA-2Na according to the amount of substance 1:1. If the volume of EDTA-2Na standard solution consumed when titrated to the end point is 20.00mL, the purity of $Co_2O_3$product is ( ). (The molar mass ... | null | \[ \frac{16.6a}{m} \times 100\% \] | 常见无机物及其应用 | che |
51508643-1_7 | iVBORw0KGgoAAAANSUhEUgAAAsoAAADACAIAAACS8NJYAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZUAU2xvwmdnepRtEUkCkTAxsRUARFBVFRURRbGyx+4rdcrGu2AUq18BuBEWkbJCUrmV7d+L9cN7/vPsCYoF48fw+we7smTNnTjznqYOQJKkCgUAgEAgE0nigzV0BCAQCgUAgLQ0oXkAgEAgEAmlkoHgBgUAgEAikkYHiBQQCgUAgkEYGihcQCAQCgUAaGXpzVwACgUAgLQTlUEQEQRr9esh/CChe/KGAUd2445kk... | iVBORw0KGgoAAAANSUhEUgAAAgEAAAFDCAIAAAAs/ErMAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9Z1wUV/v4zczONpZl6R0EBJSiCIKKWLBHIxZQYo2KsWtEbztoNGo0YowlscR2J3ZNEOygCFgQsYAFCyBVei/L1pl5Xpzn3v/+QFaiu4B6fV/4kdmzM2d3Z67rnKtiNE1rAQAAAF8keFtPAAAAAGgzQAcAAAB8uYAOAAAA+HIBHQAAAPDlAjoAAADgy6UNdABN0xCMBAAA0B4gWu1KSPRTFIUUAIZhOI5jGIZhWKvN... | null | null | null | A process for recovering copper and arsenic from the insoluble by-product black copper mud (main components are Cu, As and Cu ˇ As) produced in the copper electrolysis workshop of a factory and the arsenic-containing waste residue (main component is As ˇ S) produced in the wastewater workshop of a factory. The schemati... | null | $HAsO_2$is easily decomposed to form As ˇ O. When the dilution factor is small, the sulfuric acid concentration is large, and the solubility of As ˇ O is is small, resulting in a higher As ˇ O content in the filter residue 2 | 常见无机物及其应用 | che |
51508643-1_8 | iVBORw0KGgoAAAANSUhEUgAAA0IAAADUCAIAAAA+6wTgAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzddXgURx8H8JnZ3fO4e0ggJBDDQ3AvhVKKu7sXKe5QnKItL5TSUoq7FndIcPeQBIhA3M52d+b9Y8P1SIAGCJDQ+Tw8fejd7t7uXXL7ZeQ3kBACKIqiKIqiqOIGfe4ToCiKoiiKot4H+7lPgKIoiqKoz4/2zhU7EEIa4yiKoiiKAhBCjLEgCDTPFXEQAIgQy7K0NY6iKIqiKAAAwBhfOH9+/+5dGIs0yBVlEMKg0JAW... | iVBORw0KGgoAAAANSUhEUgAAAhkAAAFHCAIAAACDFMnGAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wTSf/42fRQEjpIkSIKgjQ7CCpiL6coilhBsaFn17Odvbc7GzwWVGyHh/WwYMPuWVARkGJQQDpSkkD6lt8f83z3lycgKiVZ4r7/4JUss7uzm5n5zGfmUyAMw3RISEhISEiaAEXTFSAhISEhafWQsoSEhISEpKmQsoSEhISEpKkQVJbI5fLc3NzLly9LJBJN14WEhISE5BvQNF0BVVAU/fTpU2xs7LVr12g0Wu/e... | null | null | null | A process flow for preparing $Na_2CrO_4·2H_2O$using chromite (the main component is $FeCr_2O_4$, also contains $MgO$,$Al_2O_3$,$SiO_2$, etc.) as raw material is shown in the figure<image_1>. It is known that $Al_2O_3$is roasted with soda ash and converted to $NaAlO_2$, and $SiO_2$is roasted with soda ash and converted ... | null | $10^{14.8}$ | 常见无机物及其应用 | che |
51508643-1_9 | iVBORw0KGgoAAAANSUhEUgAAA0sAAACcCAIAAAAh9acrAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddVxU2R/3mU66uxGQlpYSUCxYELt118b86RqrrvVb67c2Fq6FsWEgBgaKIoioiNItMHTMDAzTd+59/jivZ555KFHB2vP+C86cc+fcy72cz/2eb+AwDFOCQCAQCAQCgXxH4L/0BCAQCAQCgUAg/QxUeBAIBAKBQCDfG1DhQSAQCAQCgXxvQIUHgUAgEAgE8r0BFR4EAoFAIBDI9wZUeBAIBAKBQCDfG1DhQSAQCAQC... | null | null | null | null | A schematic flow diagram for processing lead-containing slurry (mainly containing PbO₂ and PbSO₄) from waste lead-acid batteries is shown below <image_1>. It is known that: i. $K_{sp}(PbSO_4) = 1.6 \\times 10^{-8}$, $K_{sp}(PbCO_3) = 7.4 \\times 10^{-14}$, ii. $HBF_4$ and $Pb(BF_4)_2$ are both strong electrolytes solub... | null | 3:1 | 常见无机物及其应用 | che |
51508643-1_12 | iVBORw0KGgoAAAANSUhEUgAAA0IAAAClCAIAAAD+ldqEAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wU197HmZmt7NJ7x6VXQUVRQYyKWBAVu2IJ2FFMFMUWg1jQKFGiJkawYzdYYkM01hisICigUhTEpbPLAltnzvPiPHfvXsCOUnK+L/KJw8zsObOzc37zrxgAQA2BQCAQCAQC0d7AW3sACAQCgUAgEIhPAck4BAKBQCAQiHYJknEIBAKBQCAQ7RIk4xAIBAKBQCDaJUjGIRAIBAKBQLRLaK09AAQCgUD8WwAAUBRF... | iVBORw0KGgoAAAANSUhEUgAAAoQAAACoCAIAAAD2JGh8AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd5hbxbnwJR2Vo97r9t683eu1192OjQFjWuABTDEQSkJyyU1IvVxSuCGFEB4gjZYAIRAHsOHaBtvY2Njrur33pq1a9a4j6eh8f7zfPY8eaXe9XtarNczvr92j0ZnRnDnzzrxtmBRFMRAIBAKBQCQOVqIbgEAgEAjEVx0kjBEIBAKBSDBIGCMQCAQCkWCQMEYgEAgEIsEgYYxAIBAIRIJh038xmcyEtgSBQCAQiK8Q... | iVBORw0KGgoAAAANSUhEUgAAAWsAAAC9CAIAAAD6NMupAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO3deVwTZ/4H8BmSkINwH4GGIyiHBopWFPBgRVu1FqiIVFl3i7a1Yq1Ia1vb7UvXl7tuK14vC2trXW8q6BYVxVvxwKuAoKAcctMkEI4AgYSEXPP7Y347m+UqGYIE+33/RZ5MJs88JJ/M88wzMyiGYQgAAJBiNtoVAACMYZAgAADyIEEAAORBggAAyIMEAQCQBwkCACAPEgQAQB4VQRAURUe7GgAAU9fv3DHq4E+DkYbH... | null | null | Studying methods to extract Zn from zinc-containing resources is of great significance. \n\nI. Industrial acid leaching for zinc extraction \nZinc oxide ore contains ZnO, $\\text{Fe}_2\\text{O}_3$, FeO, PbO, $\\text{Al}_2\\text{O}_3$, CaO, $\\text{SiO}_2$, etc. <image_1> \n\nKnown conditions: \ni. The $K_{sp}$ values o... | null | 5.0~6.0 | 常见无机物及其应用 | che |
51508643-1_15 | iVBORw0KGgoAAAANSUhEUgAAA0cAAACoCAIAAACkIgIeAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9eVxM/f//35zZm/a9pFWSoiTiCgkhpIWSyJKrsl/VZd+Xy76TELrK2sUV3tnXIlmKkKUFRWnTNjU1+znn98fz9zm3+U64Qhcuve5/uOXMOWde58zM6/U4z5VGkqQKAoFAIBAIBOI/Dva9B4BAIBAIBAKBaAWQqkMgEAgEAoH4GUCqDoFAIBAIBOJngPG9B4BAIH4USJJsm4G2NBqN+heBQCD+uyBVh0AgVFRUVMRi... | iVBORw0KGgoAAAANSUhEUgAAAZgAAAE7CAIAAABv0QBCAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZ1wUZ/f32V7oXaqKgAqxIWos2LCDImIPioq9RoXblqIYS2yJElsUjS1EUGwgAhoVbDGiGEVUBBHpdRfYOu15cd33PPwREY27y8D5vvDjzi47Z2Z2fnOuc53rHBZFUXoAAABMhq1rAwAAAP4tIGQAADAeEDIAABgPCBkAAIyHq7mvJkmSJEmCILhcLpvNZrFYtd8iCIIgCBaLxeFw2Gw2m/1fSaUoCr1LkiSbzUbv... | null | null | null | The process for extracting silver from lead and silver slag (containing metal elements such as Pb, Ag, and Cu) is as follows:<image_1>
It is known that PbSO_4 is poorly soluble in water;Ag^+ can form [Ag(SO_3)_2]^{3-} with SO_4^{2-}.
Na_2SO_3 and formaldehyde were used for "complex leaching" and "reduction and precipit... | null | Sodium sulfite is both a complexing agent and a reducing agent for silver, reducing Ag^+ to Ag. | 常见无机物及其应用 | che |
51364275-1_2 | iVBORw0KGgoAAAANSUhEUgAAAjEAAAElCAIAAACaoiSzAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZUAU29vAZzbYpTuVbkFSJFQQBRGUaxAKAoqt18YOBEUBFVBsFCmDaxMWCCihiJgIFxQMQhoW2YXteT+ce/fdP6iXWCSc3yeYPTP7zOyZ85zznCdgBEEgFBQUFBSUIQBmsAVAQUFBQUH5B1QnoaCgoKAMFVCdhIKCgoIyVEB1EgoKCgrKUAHVSSgoKCgoQwXcYAuAgoKC8nvBYDBaW1sZDAb3QSkpKQKBAP5GEARB... | null | null | null | null | The catalytic reforming of CO_2 to produce CH_4 is of great significance and involves the following reactions:\n\nReaction I: $CO_2(g) + H_2(g) \\rightleftharpoons CO(g) + H_2O(g) \\quad \\Delta H_1 = +41.2 \\text{kJ/mol}$\n\nReaction II: $2CO(g) + 2H_2(g) \\rightleftharpoons CO_2(g) + CH_4(g) \\quad \\Delta H_2 = -247... | null | \frac{\frac{3}{44} \times \left(\frac{3}{22}\right)^2}{\frac{7}{44} \times \left(\frac{7}{11}\right)^4} p^{-2} \left(\text{kPa}\right)^{-2} | 化学反应原理 | che |
51364275-1_5 | iVBORw0KGgoAAAANSUhEUgAAAf4AAAGDCAIAAABFseVtAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9Z0BT5/v/T3ZCCCOLQMJG9t4gIKCAuAdWbB2to1ZrbR1VWytqta46asVaa60LJyo4AEFQNihDQJC9dyBAyCbr9+B8vvnzR6VU2dyvR+Q+d865Tkje5x7XgMnlcqV3ADXC/u+PvsDe1R8AAAAA4wb4+w8BiQcAAICJCfI97bC3/gAAAADABGGAUT8AAAAAJiZA+gEAAGDSAaQfAAAAJh1A+gEAAGDSAaQfAAAAJh3v... | null | null | null | null | <image_1>Propylene ($CH_2=CHCH_3$) is an important chemical raw material. The hydration of propylene to isopropanol ($CH_3CH(OH)CH_3$) and the electrolysis of propylene are both important chemical technologies. CH_2=CHCH_3(g) + H_2O(g) \rightleftharpoons CH_3CH(OH)CH_3(g) \quad \Delta H = -51.5 \text{kJ/mol}$ . At 510K... | [
"$v(CH_2=CHCH_3) = v(H_2O)$",
"The conversions of $CH_2=CHCH_3$and $H_2O(g)$are equal",
"The density of the mixture remains constant",
"The volume fraction of $CH_3CH(OH)CH_3$remains unchanged"
] | CD | 化学反应原理 | che |
51214509-1_4-01 | iVBORw0KGgoAAAANSUhEUgAAAjcAAADDCAIAAADx1qffAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9Z0AUSRfvTU+CIcMwzCCgwIBIVgwgillRMWDAhCiY45p1TSu6BpRVWBVRXHYx4KNiRIyIGEHXgIqCgJKRHCaHDvN+qHvnnQvoqoQZpH6ftLvoPtNdVf9T51RVI3K5XAMCgUAgELWEpGoDIBAIBAL5IlClIBAIBKK+QJWCQCAQiPoCVQoCgUAg6gtUKQgEAoGoL1ClIBAIBKK+QJWCQCAQiPoCVQoCgUAg6gtUKQgE... | iVBORw0KGgoAAAANSUhEUgAAAH0AAAB6CAIAAAAd58vKAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAT10lEQVR4nO2deVQT19vHMxnCIoEkDQkkBGRR3AAVoraIekBsBXoUFCtqW0Wtoget9HjcUI+t1aMsWoq4HpeqQMWKiru16MEFjBtUqwgqIsgWQsIy2WZ7/7j+0jSgL/sIyefPOzd37nxz597nLs8zEEmSNBM9Dp3qChgpJt2pwaQ7NZhRXQEKIElSq9VWVFTcv39fJpPRaDR3d/dRo0axWCw6nQ5BEMhTXl5eUVGBYRhBEDQazczM... | iVBORw0KGgoAAAANSUhEUgAAAEUAAAB3CAIAAADaXRrYAAAACXBIWXMAAA7EAAAOxAGVKw4bAAANAElEQVR4nO2ca1ATVxvHN4GEEpgghIAQrALJiGDkIlAGyq1VkGpBqkWlQFWmdCyWCi0QqEOtQkutonSoMHQKRSqXkVasBes4CoMgVAW5TC8kmIRAIZFwCQmJuZ28H/IOzWwgBEgwdvL7lJx9ds/z3+w+uznnv4tQKBTQfwjk805Axxj1GDZGPYbNf02PqQ63JRQKe3t76XQ6n8+3tLSMjY21tLRUDRgeHh4cHGSz2UKh0MnJycnJ... | null | null | <image_1>L is a polymer compound with good heat resistance, water resistance and high-frequency electrical insulation. It is made up of three monomers, each monomer containing a functional group in its molecule. The following related statements are correct () | [
"The reaction to prepare L is an addition polymerization reaction",
"The monomers of L are<image_2>, <image_3>and HCHO",
"The ratio of the amounts of the three monomers participating in the reaction is 1:1:1",
"Three monomers can form polymer compounds with network structures"
] | D | 有机化学基础 | che |
51214509-1_6-01 | iVBORw0KGgoAAAANSUhEUgAAA1EAAAFQCAIAAADRJGNxAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9eVxM+x/43zkz1bRM+77vkaKiIhRCupFkyy5bhUL27erqWi+KFLIWN0uhSLaELoW0qrRrsZTSPs12lt8f7+93fn3L9aFmpuW+n3/chzsznfM673Pe7/N6v1aEJEmR/wH4ASIiQoqIIB0+EenyOQQCgUAgEAikL4L8hM4HgUAgEAgEAunfoL0tAAQCgUAgEAhE4ECdDwKBQCAQCGTgA3U+CAQCgUAgkIEPtbcFgEAg... | iVBORw0KGgoAAAANSUhEUgAAAFkAAABQCAIAAAD9Zk4wAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAJA0lEQVR4nO2cW0wT2xqAZ1poLZQ7FCiXForaghAhRiCREnFH7iBECIkaIYpCgkZDDG/GEF+UGEIIaDSKUROCVIyI1huKAQoG0GIhFAg3q5FCS4G29DrT8zAnNse9D7SdVRR3v6c+rLX+n29WZ/611hTYZDJBDiAIgiDCr07gN8LhwozDhRmHCzMOF2YcLsw4XJhxuDDjcGHGyX5D63S6qampsbGx+fl5rVbr4uLi5+e3e/duJpPp... | iVBORw0KGgoAAAANSUhEUgAAAFoAAABaCAIAAAC3ytZVAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAQjUlEQVR4nO1ceVQT1/fPJAFDZJEWqogCKqUsslSMQAAXZCktchA1VORoxaLQinIstnZRj56KYJeDSxUFTz1YwaUURSvaolEiKKICkSKKRAUKCWYjTEImmTfz+2N+jSzaVvKC/Z7D5y/ITO6783n33nfffTeDkCRJG8VfoL9qBf5bGKVjAEbpGIBROgZglI4BGKVjAJivWgEajUYjSZIgCIIgqH8RBKHT6XT6K5iqV08HQRA4jsvl... | null | null | <image_1>To synthesize polymer P, all the reactants were added to a closed reaction vessel at one time. The conversion route was as follows. The polymerization process consisted of three stages, which occurred in turn. The following statement is incorrect () | [
"In the first stage, there are breaks of the C-O bond and the C-N bond",
"Under this condition, the aggregation rate of Figure 1 <image_2> with <image_3> may be much greater than the aggregation rate of Figure 1 with $O=C=O$.",
"Polymer P contains three functional groups",
"Add amol $CO_2$to produce a maximum... | D | 有机化学基础 | che |
52264265-1_4 | iVBORw0KGgoAAAANSUhEUgAAAkUAAAB0CAIAAAAEpdG3AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO29eTxU7f/475yZMfYRyk7IEkqlSCVuFUobpWhR0kJUSvte2rRR3ZU2pUhRKUpalNJyl1AiJYWbrINhZpjtnPP74/q8z2++lFuaMdJ5/nE/uo+Zc17nzHWu13W9VgjDMCkCAoJOIfz6QBDUzkECAgJxQ5a0AAQEvysYhqEoKhAIpKSkYBgmkUgwDKMoiiAIiqJSUlJkMhmGYUKlERB0DbCkBSAg+F3hcDinT592cnIa... | null | null | null | null | The mechanism of Bayer's one-dimensional Liger reaction is shown in the figure below<image_1>: where R, R', R''are hydrocarbon groups, the following statement is correct () | [
"① is an addition reaction, ② is an elimination reaction",
"If 1 mol d is generated, 1 mol e^-is transferred",
"R, R'have different structures, and the product d may also be R'COOR",
"If only the No. 1 oxygen atom in the reactant is ^{18}\\text{O}, the product R'C^{18}\\text{O}^{16}\\text{OH} is formed"
] | C | 有机化学基础 | che |
52264265-1_11 | iVBORw0KGgoAAAANSUhEUgAAA0IAAACcCAIAAADd4IzhAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdeTxV2/s48LPP5JhDhswypExFMguhlCmaaJJoHrkpqdusSSXNUppEiUREpHArStEtl8hQyOwYDmfe+/fH/n7O6/xMSRlb7z/u67bPtvc60z7PXutZz4IQBMEAAAAAAAAAow12uBsAAAAAAAAADAQI4wAAAAAAAEYlEMYBAAAAAACMSiCMAwAAAAAAGJVAGAcAAAAAADAqgTAOAAAAAABgVAJhHAAAAAAAwKgEwjgA... | iVBORw0KGgoAAAANSUhEUgAAAesAAAB0CAIAAAAq1o3UAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd0AU1/PAb/d64QpH700RUVSaGnsnWMDeosYaY8XeYjfRiL0ESyxETcQa7A2xoaBiA1Hpvd/BNe5u6++P9839TpooWNnPX7C3u/d27828efNm5kEkSdIoKCgoKL5C4M/dAAoKCgqKD4TS4BQUFBRfK5QGp6CgoPhaoTQ4BQUFxdcKpcEpKCgovlYoDU5BQUHxtUJpcAoKCoqvFUqDU1BQUHytUBqcgoKC4muF0uAU... | null | null | null | A synthetic route for polymer material Q is as follows: <image_1>Known: <image_2>The following statement is correct () | [
"The type of reaction that forms X is an addition reaction",
"Y is CH_3COOCH_3",
"Up to 10 atoms in an X molecule are coplanar",
"The ratio of the amounts of Z to Y in the reaction that forms Q is 2:1"
] | AC | 有机化学基础 | che |
52568254-1_25 | iVBORw0KGgoAAAANSUhEUgAAA2wAAADYCAIAAAAYvff4AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeTwV+//4zZzFsTv2fYksqciaCKm0p+KmPdqIqyKp3KRFSiupm0gbbbcoaRMXlVal0iIVKS2EYz/HWWbm98f7853H/M5B1rr3mudfzLznPe8zM+/3+/V+vV8LhGGYGAkJCQkJCQkJCUlXgH91A0hISEhISEhISP59kEIkCQkJCQkJCQlJlyGFSBISEhISEhISki5DCpEkJCQkJCQkJCRdhhQiSUhISEhISEhIugwp... | iVBORw0KGgoAAAANSUhEUgAAAH4AAABjCAIAAADSCSOaAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAZrklEQVR4nO2ceVxTV9rHk5udEIIkBAi7gCwiKMOOGyiIWgQrqDNurTpuFcunHxRH1FFa5VMtWsWlOtCCqFUURaUUqEZUxAVFFKPsixAsMRtZyHZz7/vHnU9eXlCGhGB8B75/wb0nOQ8/zn3Oc57znIuGYRg1hjEAjG3A6GVMeqMxJr3RGJPeaIxJbzTGpDcaY9IbjTHpjcaY9EZjTHqjMSa90RiT3miMSW80xqQ3GmPSG40x6Y3G... | iVBORw0KGgoAAAANSUhEUgAAAbkAAACzCAIAAACb2vWtAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydZVhU29fAnRm6awiDblQaQVpa6QYFE1uv3Xr1WlfRa+sVRVpBGqQUkUZCEelh6O4ZBmaYOGfeD+d9eHioiwhD/X8fz+xzZp3YsdZeAaNSqSv+x//4H//jf0wJfL4F+B//43/8j0XA/8bK//E//sf/+G/o5luAeYNMJre2tpaXl/f39zMxMYmJicnJyTEzM8NgsPkWbX6gUqldXV2VlZWtra1wOHzVqlVycnJ8fHzL... | null | null | Semiconductor "silicon" has become synonymous with high technology in the information age. High-purity silicon is the basic material in modern information, semiconductor and photovoltaic power generation industries. The main process flow for preparing high-purity silicon is shown in the figure:<image_1>
It is known tha... | null | (Si_4O_{11})_n^{6n-} \text{or} Si_4O_{11}^{6-} | 常见无机物及其应用 | che |
51068596-1_1-2 | iVBORw0KGgoAAAANSUhEUgAAAoUAAABvCAIAAAAVCy1OAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2daVxTR9fAc28WIAmBALKHfVdRxAVcABUtVWmtVeqOWpdqxbbu1mqtWtGK1VpxqVJa674XW1xQREVlFwFB9n1PSALZl3vfD/M8efMERJYgoPP/4M/cTCYzYWbOnDPnnEFwHCdAIBAIBALpVdDebgAEAoFAIBAojyEQCAQC6QNAeQyBQCAQSO8D5TEEAoFAIL0PlMcQCAQCgfQ+UB5DIBAIBNL7kHq7ARBIT4ATCIja... | iVBORw0KGgoAAAANSUhEUgAAApcAAABdCAIAAAB/4to9AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2deVxTx/bAc7MHAmFfJeyriliRouKO1AXcxV3UZ8W6Vau4VKu2at21llqqzw20KgpYELQqKiKKICDIjixhC2uAQEL2e39/zHv55QVMWQJoO98//MjN5M7MzZ05c86ccwbBMAwHgUAgEAjkEwQ/0A2AQCAQCATSQ4gD3QAI5O+DTCbD4XB4PB5BkIFuCwQC+UcAdXEIRG3ExsY+ePBAKpUOdEMgEMg/BQTui0Mg6mLK... | iVBORw0KGgoAAAANSUhEUgAAAUAAAAEmCAIAAACcX966AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd3wUxfvHZ3b3ei6N5NI7CQGEBBOqdKQEDFJDlSooX+GLImIDEQFFUCygQCBGpUoxtID0TuglkAAhhCSkh5S7y/Xdnd8fI/e9X5oIlyNl3n/4ws2W2b397PPMM888AxFCgEAgNEyoF90AAoHw7BABEwgNGCJgAqEBQwRMIDRgiIAJhAYMETCB0IAhAiYQGjBEwARCA4Z50Q14dnieRwhBCCnq788QQgghxPM8TdMQ... | null | null | N, N-dimethylformamide (DMF) is a common organic solvent that is easily decomposed at high temperatures. A reaction for CO ˇ hydrocoupling dimethylamine to prepare DMF is as follows:
I: <image_1>
II:<image_2>
At 300℃, add 1mol of DMA and 1mol of CO ˇ, and 2.22 mol of H ˇ into a 2L constant-volume closed container. The ... | null | \frac{1}{19.8p_0} | 化学反应原理 | che |
51068596-1_3-5 | iVBORw0KGgoAAAANSUhEUgAAAZ4AAADYCAIAAABUaBKdAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1gUZ9fwmdle2V3q0jtKDCpo1MQSBbFgi4oaezf2Eo3G2GLJYyyxBLsmVsSGoqIIWFBEUSPYkSJF6lIWdmH7zHx/nO+ZZ1+6iKhkflcuLzI7c8+9OzNnzn0qQhCECQUFBUXLAv3YE6CgoKBoeijRRkFB0QKhRBsFBUULhBJtFBQULRBKtFFQULRAKNFGQUHRAqFEGwUFRQukDtFGGP0Lf5D/GW+noKCg+ORAPmjI... | null | null | null | null | Catalytic hydrogenation to methanol is a key technology to reduce carbon emissions and provides solutions for future fuel and material manufacturing. Under the action of catalysts, the following reactions mainly occur:
I. $ \ce{CO2(g) + 3H2(g) <=> CH3OH(g) + H2O(g)} $ $\Delta H_1 = -49.4 \text{kJ/mol}$
II. $ \ce{CO2(g... | null | With the increase of temperature, the equilibrium of Reaction II shifted forward, and Reactions I and III shifted backward, both resulting in an increase in CO selectivity. | 化学反应原理 | che |
51068596-1_3-6 | iVBORw0KGgoAAAANSUhEUgAAAsoAAAEgCAIAAAAiw8JuAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9d1xT5/v/z8neIQkQtjJlu2U4QMW966jaWrWOUlfde7Vq1VZF3LvOuuqo4kYQRRFFQBHZewZCyN4n5/fH/XmfX75hCMrSnucfPM65c3IGOTm57mu8LghBEDMMDAwMDAwMjOaDYGZmZmaGmJlBZmYmdgbUNmeEgYGBgYGB8YUDzAvI6C8GBgYGBgYGxmeBa+sTwMDAwMDAwPjawMwLDAwMDAwMjGYGMy8wMDAwMDAw... | null | null | null | null | Hydrogen energy is an ideal green energy source. Some scientists predict that hydrogen energy may become humanity's primary energy source in the future. Chinese scientists have developed the following three hydrogen production methods.\n\nI. Catalytic reforming of toluene to produce hydrogen. The main reactions include... | null | At a certain temperature, the H ˇ content at the outlet first increases and then decreases with the increase of the feed ratio. When the feed ratio is less than 7:1, the balance moves towards the generation of H ˇ with the increase of water vapor, and the H ˇ content at the outlet increases; when the feed ratio is grea... | 化学反应原理 | che |
51068596-1_4-7 | iVBORw0KGgoAAAANSUhEUgAAAlUAAAFBCAIAAADRy831AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdd1xTV/848NzsQCBskA2yVURRFOuuWkVFKopKrdaqtNaFu1Zra4fVqo+zrto+ViqioiKIC0ERRAsKspeMECAQVsgg42b8/jjfJ7+8EqA4O/J5/wU3Nyf3Jjfnc885n3OCqdVqAgAAAGBgiH/1AQAAAAB/AYh/AAAADBHEPwAAAIYI4h8AAABDBPEPAACAISJr/sIw7C89EgAAAOBtQBMfoP0HAADAEJF1/ofpgOCv... | null | null | null | null | Professor Zheng Gengfeng's team at Fudan University synthesized a CeO₂@PdO@FeO₂ hollow multilayer nanosphere catalyst and utilized it for the photocatalytic oxidation of CH₄ by O₂ to produce ethanol. The relevant reactions are as follows:\n\nReaction I: $ \\ce{2CH4(g) + O2(g) <=> C2H5OH(g) + H2O(g)} $ $\\Delta H_1 = -... | null | 18.9 | 化学反应原理 | che |
51068596-1_6-12 | null | null | null | null | null | The coal-to-methanol industry is of great significance to national energy security and the development of the chemical industry. Its main process consists of coal gasification and methanol synthesis:\n\nI. The main reactions of coal gasification:\n\nReaction 1: $ \\ce{C(s) + H2O(g) <=> CO(g) + H2(g)} $ $\\Delta H_1 = ... | null | AC | 化学反应原理 | che |
51068596-1_13 | iVBORw0KGgoAAAANSUhEUgAAAV4AAAEXCAIAAABqHrvpAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOx9d1gTWft2ZtJISOi9G5BeBAQRFFC6LNYVRMGyFiyrslbsrr2sLsrqroorCooKKkhTqlhQsYENREGKgHQIJXVmvj/Ob/PxIiIgEMDc177vJclk5pkz59zznKdCGIbhvoouvuoAqNtHiiCCCEMAhC6/FS14EUT4QQELWwARRBBhMEJEDSKIIEInEFGDCCKI0AkGLzV0YR/F/sPASiSCCD8QujZDCgdg2aMoCsMwDMOd... | null | null | null | null | Under the action of the catalyst, NH_3 can reduce SO_2 in the flue gas to S_1, turning waste into treasure. The reaction is as follows:
Reaction: 2NH_3(g) = N_2(g) + 3H_2(g) \quad \Delta H_1 = +92 \text{kJ·mol}^{-1}
Reaction II: 3H_2(g) + SO_2(g) = 2H_2O(g) + H_2S(g) \quad \Delta H_2 = -207.4 \text{kJ·mol}^{-1}
Reactio... | null | 2.4 | 化学反应原理 | che |
51068597-1_2-3 | iVBORw0KGgoAAAANSUhEUgAAA0cAAADyCAIAAAAJNymPAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeVxM+//4O2eWZqZpm5p22jclCUnZIlkqRChL15J9v3aui+tm18WlCIVL5CJ72UIiJKWkjbSvWmdq1jPn98fr8Tm/+U5J9rjn+Ved5X2WeZ/3+/V+rQiO40okJCQkJCQkJCQ/OOj3vgESEhISEhISEpIvACnVkZCQkJCQkJD8DJBSHQkJCQkJCQnJzwAp1ZGQkJCQkJCQ/AyQUh0JCQkJCQkJyc8AKdWRkJCQkJCQ... | null | null | null | null | Compound L is a synthetic intermediate for drugs used to treat congestive heart failure. One of its synthetic routes is shown in the figure: <image_1>There are () aromatic isomers with the same functional group as J. | null | 16 | 有机化学基础 | che |
51068597-1_2-5 | iVBORw0KGgoAAAANSUhEUgAAA1EAAAFNCAIAAABubHI0AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzddVwV2R4A8Dkzc5NLt3SKIIpSYoPd3d3d3a5rrsHanWt3YyA2ilgotkiJdN6+d+ac98cojwVUVgEVz/e9z/vsY++dvDPzm98553cAQojAMAzDMAzDKjTyR28AhmEYhmEYVuZwzIdhGIZhGFbx4ZgPwzAMwzCs4sMxH4ZhGIZhWMWHYz4MwzAMw7CKD8d8GIZhGIZhFR+O+TAMwzAMwyo+HPNhGIZhGIZVfDjmwzAM... | iVBORw0KGgoAAAANSUhEUgAAAO0AAAAzCAIAAAD0GxiHAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAKW0lEQVR4nO2cf0hT3xvHz11ZOTddZWa//DENK6OizCSkaZMicVIilSXb+kVQVlQUVkRUUE6oqKCkD5KWooRSbNXAMiuyNKf0R1r+XCPZ1GZtbbqay/P948Ttsqtzzs0f93tef233nHOfc5/nfbfznOduBIQQYDATHNZYTwCDcQNYxxgmgHWMYQJYxxgmgHWMYQJYxxgmgHWMYQJYxxgmgHWMYQJYxxgmgHWMYQJYxxgmgHWMYQJY... | iVBORw0KGgoAAAANSUhEUgAAARQAAAA/CAIAAACuDqBvAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAWb0lEQVR4nO2deXwURfbAq6q750gyScg9MCTIfQkJBIgbSCACrsqhGFwVNq7ib0EuN7AuqHgjxDMCuiYuBFBEUIJLwqIiEEDBQBIWlITDQO4J5Jwhc3d31e+PCuPkIEAyM0nY/n74ANNd3fOmu14dr169BwkhQEJC4vZBnS2AhER3RVIeCYl2IimPhEQ7kZRHQqKdsJ0tgITE7xAKxuS6IQtCiCCECEEIm5QhjUUgLQQhQuhGpyhO... | iVBORw0KGgoAAAANSUhEUgAAASAAAAA1CAIAAABujaFLAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAQb0lEQVR4nO2deVCTx//HnyckCIlAOOSoyCGnMBVazqqjFmSccsoxpViGRgRBx+oopcW2yiAMclS0tc44QuSyLX+AbYGRjhpAxlpOkc5AEXQAxQQxaiAh0CcPyfePnXl++T05OWJB9/UX2f08zz7Hfnb3+ex7F1QmkyEQCEQ3UP7rC4BA3mSgg0EgOgQ6GASiQ6CDQSA6BDoYBKJDoINBIDoEOhgEokOgg0EgOgQ6GASiQ6CDQSA6... | iVBORw0KGgoAAAANSUhEUgAAAD8AAABHCAIAAAA/TAgkAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAK5ElEQVRoge2beVQURx7Hq6p7cEa8IoeJiICgIzcICiLemHghOTCKB0lYjTHZaDabaLIxXjGba7PJS9bnGt2sJmo0rkmUiGu8IiiahAVBCdcI6MgxwxiJw8x0V3dV7R+tBDmEGRgx7/n9B97r6alP1VT/6le/bzVkjIHfrfjbXmUAwCb/tNpP6BywDgn+rscedTdAp3T7mdMlYoRQQmQiEwYYhIjjOJVKBWEXTDkn0jPGZFm+VFF+... | The two synthetic routes for the antitumor drug Xiangye Munin J are as follows: It is <image_1>known that <image_2><image_3><image_4>there are () isomers that meet the following condition D (regardless of stereoisomerism).
① contains only one ring structure <image_5>② The ring contains three substituents, one of which ... | null | 24 | 有机化学基础 | che |
51068597-1_2-7 | iVBORw0KGgoAAAANSUhEUgAAA0cAAAC9CAIAAAD3OZE2AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOx9dViU2fs3UwxDDN0hHQoISEizIIJKSiuCYsAaKCKIDa6xih2oCKgsZYEKNiIYqBgrGAiCIt09TM+8f9zX77nmpQxAd/c7nz+85JnznHOek3ffKDabzcMFF1xwwQUXXHDBxb8c6F/dAS644IILLrjgggsuxgFcqo4LLrjgggsuuODivwAuVccFF1xwwQUXXHDxXwCXquOCCy644IILLrj4L4BL1XHBBRdccMEFF1z8... | iVBORw0KGgoAAAANSUhEUgAAAkwAAAAkCAIAAAD0PvKKAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAeD0lEQVR4nO2deVwTSfbAuwlBucM5HCq3cnxER1h0FEUX7xERAQ9UUIEVcRzGYVEYPGbFATKCiMjIqCiCrojBg2MVEFREkUtAJYABRMAEFIFACJCE5PdH7fanNwkhJGGc9dffv6C7uvpVdVW9qveqXmAejwdhYGBgYGB8ich9bgEwMDAwMDAmC0zJYWBgYGB8sWBKDgMDAwPjiwVTchgYGBgYXyyYksPAwMDA+GLBlBwGBgYGxhcL... | null | null | null | Tetrahydropalmatine has strong sedative and analgesic effects with few side effects. The synthetic route of its intermediate G is as shown in the figure<image_1>. It is known that <image_2>aromatic compounds N and C are isomers of each other. There are () structures of N that meet the following conditions;
① There are ... | null | 22 | 有机化学基础 | che |
51068597-1_2-8 | iVBORw0KGgoAAAANSUhEUgAAAuIAAAGwCAIAAABjL5cJAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeTyU3f//XTPD2Mm+k1BEthYSqUQ3WmhPFBWtWqS79W7RTpHsKkuytMjSotKuTaVQSZSyZGcGs891Xb8/zvczD7+6626ZQZznHz1yGeec65pznfM67/N+vw+C47gQBAKBQCAQSN+D0NsNgEAgEAgEAvl3oEyBQCAQCATSR4EyBQKBQCAQSB+F1NsNgEAg/QoOh8NgMFAUFRcXFxERQRBESEiIy+UyGAwMw0gkkpiY... | iVBORw0KGgoAAAANSUhEUgAAAVkAAACeCAIAAAAXCu40AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOy9Z1wTWfv4TRoESKE3kdBVQFA6SBVBRYqi6CoqIlhYFWwoomJb1742RHDXgoV1EcQCNgQFBSuggtJ775DeZvJ/cX53njyAiEo33xf7Wclk5sxkznWuc1UEj8cTESJEyC8PergHIETIrwvvf4iIiCD+B4/Hg2EYHMD/4xAMRigLhPxagJnG4/EQCAQSiQTTrNc/DsFIPn/+XFFRwWKxEAiElJSUhYWFpKRkTk5OTU0N... | null | null | null | Methylcartest can be used to treat ulcerative colitis. One route for synthesizing methylcartest is shown in the following figure: <image_1><image_2>There are () isomers of H that meet the following conditions (regardless of stereoisomerism).
① It can react with NaHCO_3 solution;
② There are 3 substituents on the benzen... | null | 15 | 有机化学基础 | che |
51068597-1_2-9 | iVBORw0KGgoAAAANSUhEUgAAAtkAAAFJCAIAAADBoaYXAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeVxOS/z4O8/aXlo8SlqIW2nHbaVkSYVEyZ66tqyJ7GSJaymUlK1shWuJZC3LLSTSIlKion2vZ1/O9vtjvt/n17dw0y7n/YeXznPOzJz5nJn5zGc+8xkIx3EJAgICAgICAoIegtTTBSAgICAgICD4rSF0EQICAgICAoKehNBFCAgICAgICHoSQhchICAgICAg6EkIXYSAgICAgICgJyF0EQICAgICAoKehNBFCAgI... | iVBORw0KGgoAAAANSUhEUgAAAXYAAABUCAIAAAAZL4u7AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ1wUV9vwmbKVXdqiAoJUJUpXQDCaYEkIalRA5TaisQKxgVExdrERKYl4K5Zwm6gRe1ATfURiRQUCigoIGhUEEQGpy9Zp74fzvPPsDYr0XTbz/8CPnTl75szOzDXnXBWiKEqHgYGBoXuA1T0ABgYGbYYRMQwMDN0II2IYGBi6EVTdA2Bg6Brep1WEIKhlS5Ikof9Pj4zunwsjYhi0AYqixGJxfX09SZIURQHZgaIo... | null | null | null | Flufentranone is a semibazone insecticide that can effectively control a variety of pests. The following figure shows one of its synthetic routes: <image_1><image_2>Compound D is known to contain multiple isomers, among which there are () isomers of aromatic compounds that meet the following conditions.
① It can cause ... | null | 23 | 有机化学基础 | che |
51068597-1_2-11 | iVBORw0KGgoAAAANSUhEUgAAArQAAAD8CAIAAAAJyKClAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddVxUy/vH2aQ7F+kOacVAwQBBQSQUBRXB7kDlgoFeRC8qJrag2IqtGBgIWGAiBooISnfsApvn7O+P53XPb7+giLKU97z/8CW7Z+fMmZkz85lnnnmGwOfzRXBwcHBwcHBw/oXY3RnAwcHBwcHB6Vng4gAHBwcHBwfnf8DFAQ4ODg4ODs7/gIsDHBwcHBwcnP+B/LMLWrsrEjorLzg4ODg4ODg9gJ+KA1wK4HQpfD4f... | null | null | null | null | The conversion and comprehensive utilization of carbon dioxide are important ways to achieve the strategies of "carbon peak" and "carbon neutrality". Chinese scholars have achieved the synthesis of atopic acid, an important pharmaceutical intermediate, taking electrocatalytic reaction as the key step and using CO_2 as ... | null | ab | 有机化学基础 | che |
51068597-1_3 | iVBORw0KGgoAAAANSUhEUgAAAvEAAADGCAIAAADUukiKAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeUAN3f/478zd2m/dui0qLSqVVCRS1uySskYoax8SUpF4PMSDSChJZI3wWEORQrYQZYknS0kk7Xu3u83y++N8n/u7TyXtyHn9xW3mzJmZM+e8z3tFSJKkQCAQCAQCgfzioD+6AxAIBAKBQCDtAJRpIBAIBAKBdAWgTAOBQCAQCKQrAGUaCAQCgUAgXQEo00AgEAgEAukKQJkGAoFAIBBIVwDKNBAIBAKBQLoCNAqF... | null | null | null | null | <image_1>X undergoes a series of reactions to give Y(molecular formula is C_7H_8O_2). There are () isomers of Y that meet the following conditions.
i. It can make FeCl_3 solution appear purple: ii. The NMR spectrum has 4 groups of peaks and the peak area ratio is 3:2:2:1. | null | 3 | 有机化学基础 | che |
51068597-1_13 | iVBORw0KGgoAAAANSUhEUgAAAw8AAAERCAIAAACy/QxDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddVgVSxvAd3b3BN0lYYEgJSAKIqViB3b3vXZdu7u7u1uxu7uxA0FAEAlJicOpjZnvj4Ejop8F9v4en/tc9uzOzu7Ozr7zJkAIEQICAgICAgICAv8H8md3QEBAQEBAQEDgl0aQlgQEBAQEBAQEPoUgLQkICAgICAgIfApBWhIQEBAQEBAQ+BT0B1sQQYAPtnwI+NhGAQEBAQEBAYE/jQ+lpQ/FIEEwEhAQEBD4ChBC... | iVBORw0KGgoAAAANSUhEUgAAAToAAABUCAIAAACdqWyVAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ2AURRvHd3ZvL3eX5NJ7I4WEEhJ6VVAIvQiioHQQrKgoTSACUgIEQgApoqiohN5REHkJhARQCS2hJoSS3tu1vS0z74dJzjMJSQiXJvvjPhy52dnZ8t+ZeZ5nngUIIUJERKQ5QDZ2A0RERGqLKFcRkWaDKFcRkWaDKFcRkWaDKFcRkWaDKFcRkWaDKFcRkWaDKFcRkWaDKFcRkWaD5Nk3MY6CAgSBCAKYskUiIiJP... | iVBORw0KGgoAAAANSUhEUgAAAbkAAAAqCAIAAAChs7ImAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAPAklEQVR4nO2df0xT1xfA3ystk/KjhbEBw1FR0A4yRgLWbZJBVhKTCTKFTBkMCsi2kGVmMAfbiAZw0E6njI3B+BGFEkcWNBNYzMwqupgo0icqkfFLAZ0tKsivUlh5tt8/7vK+3eujrz9egcX7+Yu8d9+95917znn33nNPQQ0GAwKBQCAQs7BWWgAIBAL5DwB9JQQCgdADfSUEAoHQA30lBAKB0AN9JQQCgdADfSUEAoHQA30lBAKB... | null | null | Compound H is a synthetic drug intermediate. An artificial synthetic route for synthesizing Compound H is <image_1>shown in the figure. Known:
I. When two hydroxyl groups are connected to the same carbon atom, it is unstable and prone to reaction:<image_2>
II. <image_3>
The name of the oxygen-containing functional grou... | null | ketone carbonyl | 有机化学基础 | che |
51068597-1_19 | iVBORw0KGgoAAAANSUhEUgAAA0UAAAByCAIAAAATcu1qAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOx9eTxV6/e/M5nnKRUhIpUGKoUMGSpUrlRSFGnScNHoNqdBiUY3RYZmKbqVaNCMikiFkHmeDs487vP7Y70++3e+lDQYune//7iv7nHOfp69n7XXs9Z61novnEAgEMGAAQMGDBgwYMDw2wLf3xPAgAEDBgwYMGDA8FPA7DkMGDBgwIABA4bfG5g9hwEDBgwYMGDA8HsDs+cwYMCAAQMGDBh+b2D2HAYMGDBgwIABw+8N... | null | null | null | null | Compound E is a photoinitiator widely used in photo-cured products. Compound A can be used as raw material and synthesized according to the following route:<image_1>
Regarding this synthetic route, the correct statement is ().
A. Compound A is soluble in water because it can form hydrogen bonds with water
B. During the... | null | AD | 有机化学基础 | che |
51068597-1_20 | iVBORw0KGgoAAAANSUhEUgAAA1EAAAE1CAIAAACJHf2YAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOyddzxW7//473Pu7b7tkREykigJGfVuaCnZpVCStkJp0FBKW3snGqLeJVoqCS3tPu+WtEiDzOxxj7N+f1zfz/ndH8pbQ246zz88OM64zjnXeV2v63W9BkQQBI2CgoKCgoKCgqJTA7d3AygoKCgoKCgoKNocSuejoKCgoKCgoOj8UDofBQUFBQUFBUXnh/HtfxE0GvS/fzYH+tpGCgoKCgoKCgoK6aIFnQ9q8c9OBSEB... | null | null | null | null | Resveratrol (Compound I) has antitumor, antioxidant and anti-inflammatory effects. The following <image_1>is the route used by a research group to synthesize Compound I. The name of substance C is (). | null | 5-\text{Methyl}-1,3-\text{Hydroquinone} | 有机化学基础 | che |
52674502-1_4-9 | iVBORw0KGgoAAAANSUhEUgAAAmQAAADnCAIAAAA/yN20AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeUBN6f/Hz3LXbsttu23aS5SIUrYRSmSXkMKQLMm+M1Ej25jsKopIGGOJypJtEiL7VlFJ0qJdt+Wu55zn98czc399rSEVzusPuqfTOc8593me97N8FhQAgNDQ0NDQ0NB8GKylC0BDQ0NDQ9PaocWShoaGhobmE9BiSUNDQ0ND8wlosaShoaGhofkEtFjS0NDQ0NB8AkZLF4CGhobms6EoiqIoAACDwUAQBEXRli4R... | iVBORw0KGgoAAAANSUhEUgAAAkAAAAECCAIAAACZgP+bAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOxdd1wTSRve2d0kpNB774giioBiQYqiYkM929l7r6jYzoLtOHsXRaxn7x5YwN57ARtKky4lkJBA2u7O98ecuQjI3emp+JnnD35LMrs7O5mdd972vABCiGmhhRZaaKHF9wb8W3dACy200EILLT4FWgGmhRZaaKHFdwmtANNCCy200OK7BBEZGfmt+6CFFp8FkUgUFxdnZmbGZrMJgsAwjGGYkpKSRYsWtWjRgsViAQBq... | null | null | null | Sulfuryl chloride [SO_2Cl_2] is easily soluble in alcohol, soluble in hot water, and insoluble in cold water. It is stable in acidic, neutral and alkaline aqueous solutions and is mainly used in the manufacture of medicines, pesticides, dyes, etc. The device for preparing sulfuryl chloride is shown in the figure below.... | null | \frac{a - \left( c_1 V_1 \times 10^{-3} - \frac{1}{2} c_2 V_2 \times 10^{-3} \times 25 \right) \times 107}{a} \times 100\% | 常见无机物及其应用 | che |
50980546-1_1-5 | iVBORw0KGgoAAAANSUhEUgAAApEAAAFlCAIAAAA8oiQOAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzdZ0AT2doA4ARI6L1DqCJNelOkCEhRwAIWEHVxbWABURcLUhXFgggWWKwgggq7oKgISFE6CApSBKT33muA5Psx98vNpUkJCdHz/CIzZ2beCZO8mTOnwLFYLAwAAAAAgGWPgtQBAAAAAAAwJyBnAwAAAAB5ADkbAAAAAMgDyNkAAAAAQB5AzgYAAAAA8gByNgAAAACQBypSBwD8RsbHx0dHR0kdxQJRUlIikUgKCvAz... | null | null | null | null | The dual-cathode microbial fuel cell can perform nitrification and denitrification. The device is as shown in the figure<image_1>. The following statement is wrong () | [
"Migration direction of H^+: anaerobic anode → anoxic cathode, anaerobic anode → aerobic cathode",
"When the device is in operation, the pH of the solution near the \"oxygen-deficient cathode\" electrode increases",
"The reaction formula of the \"aerobic cathode\" electrode is: NH_4^+ - 6e^- + 2H_2O = NO_2^- + ... | CD | 化学反应原理 | che |
50980543-1_2-12 | iVBORw0KGgoAAAANSUhEUgAAAP8AAADDCAIAAADC0lBLAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO19d1yVdfv/2ZNz2BvZsgTBPVICxZmmhjNzJ2rlesx8TPHJLDNXw5GVo6yw1HD93LM0F25UFBURZM+z132f+/fH+/t8OqEhKAd58n7/4QvwPude1+f6XPN9cRmG4bBg8UKC97wvgAWL5wZW+lm8uGCln8WLC4GdvpdhGC6Xy+FwaJqmKEooFNrpRCxYPBY8Hg/ix+fzrVarXq8XiUQikcj2GHtJP4fDoSiKy+Xq9Xq9... | iVBORw0KGgoAAAANSUhEUgAAAOAAAAC3CAIAAACExMX5AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dd1wUV/f/d2Y7LL33pohUUSEgKiJgQyXWJGhiV0KiaPCJ0ZjE8sQWYy9YUZSIGAsqdiWKKAKCEhQsgALSy1J22d3Zmfn+cX7PvPZHEymyyLz/4LXM7uzc2f3sufeee+45CEmSDBoaZQXt7gY0D4ZhOI53dytouh8lFegff/zx7t277m4FTfejdAIlSRLDsGPHjj19+pQeftAonUAZDMbr169LSkoyMjJogdIonUAJ... | iVBORw0KGgoAAAANSUhEUgAAAOcAAADGCAIAAACmZgDkAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZ1xU1/b355zpnSK9o1IEFMEWK2rsJdiNYovGGmOJNya2RHMtiSXWRGNNYkmwd1S42EBsYAGkKE16nQGmnva8WM89d/40EQYcyPm+8IOn7pnzm33W3mvttRCKolgMDC0K9EM3gIHhvWFUy9DyYFTL0PJgVMvQ8mBUy9DyYFTL0PJgVMvQ8mBUy9DyYFTL0PJgVMvQ8mBUy9DyYFTL0PIwadVSFKXX60mS/NANYTAt... | iVBORw0KGgoAAAANSUhEUgAAAOQAAAC9CAIAAAAstEblAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2deVwTV/f/M0sWkkBIIOw7yGZQULGKorijoLjUXWrrVm212Ke2rrUVt/apW6vto1Wk7tpq3QWlahW3igsICojsBGQNCUlIMpmZ3x/3+5snDyACYZV5/8GLJDOTm+Qz59577rnnQCRJMmhougJwRzeAhqap0GKl6TLQYqXpMtBipeky0GKl6TLQYqXpMnQWsZIkiWFYR7eCplPTWcSqUqkSExNxHO/ohtB0XjqFWEmS... | iVBORw0KGgoAAAANSUhEUgAAAOQAAADACAIAAACbCFj6AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO29d0AU1/o+vjOzhV12WWABpSkgIiiKYENAReyoUUlIxGvv5RpiF2KJsSS25Nr1xhiTaGyJxl6iCXZBsKAIohQVWNrStu/OzPn+8f7ufPgBItJX5vkLZmfOntl55j3veSuGEOKwYGEKwJt6AixY1BQsWVmYDFiysjAZsGRlYTJgycrCZMCSlYXJoFmTFSFEkiRN0009ERbNAs2arBwO5+jRo0qlsqlnwaJZoPmSFcTq... | At a certain temperature, a certain amount of X(g) is filled into a closed container, and the following reactions occur: X(g) \rightleftharpoons Y(g) (\Delta H_1 < 0), Y(g) \rightleftharpoons Z(g) (\Delta H_2 < 0). The relationship between the measured gas concentrations and the reaction time is shown in the figu... | [
"<image_2>",
"<image_3>",
"<image_4>",
"<image_5>"
] | B | 化学反应原理 | che |
51529250-1_1-1 | iVBORw0KGgoAAAANSUhEUgAAAfIAAAFDCAIAAABOZRtXAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydd1wUx/vHd3Zvr3EcTTqKIIKiYu89xG7EgsZGjDUhiQ2NqF9jicYWNdZojIqKxobYC4hiAbtgQOyAAiIdDri6u7O/P0Yv9wNETSgHzvvlH3K3szu7N/vZZ595nmcAz/MEBoPBYGoLZHV3AIPBYDAVCZZ1DAaDqVVgWcdgMJhaBZZ1DAaDqVVgWcdgMJhaBZZ1DAaDqVVgWcdgMJhaBZZ1DAaDqVVgWcdgMJhaheAj... | null | null | null | null | With the determination of my country's carbon peak and carbon neutrality goals, the utilization of carbon dioxide resources has attracted much attention. Answer the following questions:
I. Synthesis of urea from CO_2 and NH_3
2NH_3(g) + CO_2(g) \rightleftharpoons CO(NH_2)_2(s) + H_2O(g) \Delta H = -87 \text{kJ} \cdot \... | null | bd | 化学反应原理 | che |
50841065-1_19 | iVBORw0KGgoAAAANSUhEUgAAANsAAAC6CAIAAACoSa/oAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nO2dZWBUR9fHr6xnNxt3N4h7QggkOMESHIIXKQUqFFoKBYq7lQcr1uIWLLgEJ0gSJO6+ETbJZl2vvB9u2XcbIw0BAr2/T8ndubNzd/87M2fmzDkgjuMACUmHAfrUDSAh+QekIkk6FpRP3YAvCqVSWZSfn5OVhWKoX0CAg6MTlUb71I36zCAV2W4olcpr8Rf3bP9drVbBMKVeIFjw27KxEyaCIPipm/Y5AZKWTXuRl5M9... | iVBORw0KGgoAAAANSUhEUgAAAfoAAAFTCAIAAABeZFk4AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOzde1yM6f84/pmaTjPpfD46R5ZQWVsohxYRllgWOS1LOW5OYa2zQtahwy6WFe+VpGiQQ0gsomkRI6R0munc1EzTNKf798f1/dy/2ZlpmmqQ7tfzDw9zd90z133f17zu675OQ8YwjAQAAKCz0/rcGQAAAPApQLgHAABCgHAPAACEQJF7TSaTP1NOAAAAaJhs7yzU7gEAgBDka/dIJx6uQyaTO/HRAaKB8gyao9hUA7V7... | null | null | null | Chemical reactions are accompanied by energy changes, and chemical energy can be transformed into various forms of energy such as heat energy, electricity, and light energy. Answer the following questions:
The <image_1>experimental steps for measuring the reaction heat of the neutralization reaction using the device sh... | null | -51.8 | 化学反应原理 | che |
50980545-1_6 | iVBORw0KGgoAAAANSUhEUgAAA+EAAAFZCAIAAAB43bmAAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAgAElEQVR4nOydeSBV29v4HQ6ZokylhIoSt0Kh8WoQGRqUEreoK02GSoRKKgkRSUqFSooyVOYMiTQZMmUKITKcTIeDkzPs3x/r9+7ffs85jmO499v7/tbnL9bZw9p7r/WsZz3reZ6FQxCECwKBQCAQCAQCgfw2cP+nKwCBQCAQCAQCgUD+G1BHh0AgEAgEAoFAfi+gjg6BQCAQCAQCgfxeQB0dAoFAIBAIBAL5vYA6OgQCgUAgEAgE... | null | null | null | null | X, Y, Z, and Q are main group elements with increasing atomic numbers. X has the smallest atomic radius, Y and Z have the same number of valence electrons, Q element appears purple in the flame reaction, and the structure of a certain compound formed by the four elements is as <image_1>shown in the figure. The followin... | [
"First ionization energy: Z > Y > X > Q",
"Boiling point of the simplest hydride: Y > Z",
"Ion radius: Z > Q > Y > X",
"ZY_2 and ZY_3 have the same VSEPR model"
] | A | 物质结构与性质 | che |
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