instruction stringlengths 15 21.8k |
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I tried one experiment. I started with ordinal yellow zinc screws.
The screws were sumberged in bath of two parts of $4.7\%$ solution of $\ce{NaClO}$ and one part $\ce{NaOH}$. The screws turned silverish in color. Then, I submerged them into vinegar. Vinegar turned them black. I am now wondering what actually happe... |
I added stearic acid to hot vegetable oil and saw it turned to a sludgy, slush material in about 1.5 hours. Is there any other natural additive that I can add to make it more solid in the same amount of time?
I'm currently trying soy wax + stearic acid.
Are there any other natural alternatives?
---
**Wha... |
Allosteric binding is where the enzyme can be regulated through having ligands bind onto somewhere that is not the active site. This will then induce a conformational change on the active site, hence preventing binding and catalysis.
Often after a long pathway, the final product can act as the modulator and bind at... |
Why does allosteric binding produce a sigmoidal curve? |
I added stearic acid to hot vegetable oil and saw it turned to a sludgy, slush material in about 1.5 hours. Is there any other natural additive that I can add to make it more solid in the same amount of time?
I'm currently trying soy wax + stearic acid.
Are there any other natural alternatives?
---
**Wha... |
I was studying chemical equilibrium and my teacher taught me the law of mass action given by Guldberg and Waage. But is there any proof of this law? I did not find the proof anywhere. I searched all over the internet. The proof is not in my textbooks, not did my teacher tell me anything about the proof. It would be of ... |
Is there any proof of law of mass action? |
I was studying chemical equilibrium and my teacher taught me the [law of mass action][1] given by Guldberg and Waage. But is there any proof of this law? I did not find the proof anywhere. I searched all over the internet. The proof is not in my textbooks, not did my teacher tell me anything about the proof. It would b... |
> The particle on a ring is a useful model for the motion of electrons around the porphine ring, the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. We may treat the group as a circular ring of radius $\pu{440 pm}$, with 20 electrons in the conjugated system moving along th... |
> The particle on a ring is a useful model for the motion of electrons around the porphine ring, the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. We may treat the group as a circular ring of radius $\pu{440 pm}$, with 20 electrons in the conjugated system moving along th... |
I ran a neat sample of methyl salicylate (*CAS: 119-36-8*) on the GC-MS and used $\text{m/z 120}$ as the quantifier and $\text{m/z 92}$ and $\text{152}$ as qualifiers. Below is the SIM spectrum for these ions, with two distinct peaks. Both peaks are identified by the NIST spectrum database as that of methyl salicylate.... |
I have read the definition of vapour on Wikipedia, but I don't seem to have a clear idea about how different is a vapour from a gas. I know what it means when it says, "gas at a temperature lower than its critical temperature".
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/ZLQAl.png
... |
The polarity of water?
Rory Geoghegan
The deflection of a stream of water by an electric charge is often cited as a demonstration of the polarity of water molecules. The idea has even found its way into science text books.
What’s wrong with the explanation?
Water molecules are polar; this is ... |
Neat or pure for organic chemists has a different meaning for analytical chemists. What does your manufacturer label say? 100% pure methyl salicylate? That is not possible. It must have closely related impurities. Did you try a thin layer chromatography experiment with this sample?
There is no concept of 100% pure s... |
I ran a neat sample of methyl salicylate (CAS: 119-36-8) on the GC–MS and used $m/z~120$ as the quantifier and $m/z~92$ and $152$ as qualifiers. Below is the SIM spectrum for these ions, with two distinct peaks.
[![SIM spectrum for quantifier and qualifier ions with two distinct peaks][1]][1]
Both peaks are ident... |
Why do I see two peaks for methyl salicylate in my GC–MS spectrum? |
$\ce{Zn + HNO_3\longrightarrow Zn(NO_3) +NH_4NO_3 +H2O}$
**Attempt.** So I have done the oxidation numbers of all of them, but I'm having troubles finding the half reactions since on the right side there are 2 components with nitrogen, and as well, one of those 2 components has 2 different oxidations numbers, what d... |
$\ce{Zn + HNO_3\longrightarrow Zn(NO_3)2 +NH_4NO_3 +H2O}$
**Attempt.** So I have done the oxidation numbers of all of them, but I'm having troubles finding the half reactions since on the right side there are 2 components with nitrogen, and as well, one of those 2 components has 2 different oxidations numbers, what ... |
$\ce{Zn + HNO_3\longrightarrow Zn(NO_3)2 +NH_4NO_3 +H2O}$
**Attempt.** So I have done the oxidation numbers of all of them, but I'm having troubles finding the half reactions since on the right side there are 2 components with nitrogen, and as well, one of those 2 components has 2 different oxidations numbers, what ... |
$\ce{Zn + HNO_3\longrightarrow Zn(NO_3)2 +NH_4NO_3 +H2O}$
**Attempt.** So I have done the oxidation numbers of all of them, but I'm having troubles finding the half reactions since on the right side there are 2 components with nitrogen, and as well, one of those 2 components has 2 different oxidations numbers, what ... |
> The particle on a ring is a useful model for the motion of electrons around the porphine ring, the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. We may treat the group as a circular ring of radius $\pu{440 pm}$, with 20 electrons in the conjugated system moving along th... |
$\ce{Zn + HNO_3\longrightarrow Zn(NO_3)2 +NH_4NO_3 +H2O}$
**Attempt.** So I have done the oxidation numbers of all of them, but I'm having troubles finding the half reactions since on the right side there are 2 components with nitrogen, and as well, one of those 2 components has 2 different oxidations numbers, what ... |
The oxidation state of $\ce{Zn}$ as calculated by you is incorrect. The correct oxidation state of $\ce{Zn}$ is $+2$ as it is associated with two mono negatively charged $\ce{NO3-}$ ions.
Thus the unbalanced reaction with correct oxidation states would be:
$$\ce{\overset{0}{Zn} + \overset{+1}{H}\overset{+5}{N}\o... |
I need to balance the following reaction:
$$\ce{Zn + HNO3 -> Zn(NO3)2 + NH4NO3 + H2O}$$
I assigned all oxidation numbers:
$$\ce{\overset{0}{Zn} + \overset{+1}{H}\overset{+5}{N}\overset{-2}{O_3}\longrightarrow \overset{2+}{Zn}(\overset{+5}{N}\overset{-2}{O_3})2 +\overset{-3}{N}\overset{+1}{H_4}\overset{+5}{N}\o... |
We have a UV gas analyzer we want to test to see if it reads gas phase H2SO4. How can we safely produce less than 5 ppm H2SO4 as a spike test to see if the analyzer sees the spectra? |
I have plotted a cyclic voltagram for my different polymer blends and I am trying to work out the onset of oxidation. picture below is my graph
[![enter image description here][1]][1]
from this website: https://www.ossila.com/pages/cyclic-voltammetry
There is a diagram which shows how the straight line should ... |
The short answer: Do not rely on the SIM trace alone. Amplify the representation of the trace about the TIC (_total ion current_) until you see _a reasonable_ peak intensity at the same retention time as in your SIM traces (perhaps a time spectrum, but not a mass spectrum). Then integrate with the peak-shaped cursor... |
I have read the definition of [vapour on Wikipedia](https://en.wikipedia.org/wiki/Vapor), but I don't seem to have a clear idea about the difference between a vapour and a gas. I know what it means when it says, "gas at a temperature lower than its critical temperature".
[![enter image description here][1]][1]
... |
What is the difference between "vapour" and "gas"? |
The catalytic efficiency of an enzyme is given by $k_{cat}/k_M$ where $k_{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
$k_{M}$ is a measure of the affinity of the enzyme with the substrate, or the likelihood of binding.
Why bother dividing ... |
Why use Km in catalytic efficiency? |
The catalytic efficiency of an enzyme is given by $k_{cat}/k_M$ where $k_{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
$K_{M}$ is a measure of the affinity of the enzyme with the substrate, or the likelihood of binding.
Why bother dividing ... |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat} is the rate of the reaction under saturat... |
Please don't apply the reversible CV diagram on something which is clearly a non-classical cyclic voltammogram. When you experimentally don't get the shape as predicted by the theory, it means it that particular theoretical model does not apply in your case.
Look at three different types of voltammograms in this pic... |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat}$ is the rate of the reaction under satura... |
Cu reacts with HNO3 according to the equation $Cu+HNO3-->Cu(NO3)2+NO+NO2+H2O$
If $NO$and $NO2$ are formed in 2:3 ratio, what is coefficient of Cu when equation is balanced with simplest whole numbers?
I tried a lot and finally I am getting answer as 6, but the answer is 9 it's quite disappointing after much try... |
$\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$
If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{Cu}$ when equation is balanced with simplest whole numbers?
I tried a lot and finally I am getting answer as 6, but the answ... |
$\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$
If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{Cu}$ when equation is balanced with simplest whole numbers?
I tried a lot and finally I got :
$$\ce{4Cu + 18HNO3 +10H+ ->... |
Allosteric binding is where the enzyme can be regulated through having ligands bind onto somewhere that is not the active site. This will then induce a conformational change on the active site, hence preventing binding and catalysis.
Often after a long pathway, the final product can act as the modulator and bind at... |
We have a UV gas analyzer we want to test to see if it reads gas phase $\ce{H2SO4}$. How can we safely produce less than $\pu{5 ppm}~\ce{H2SO4}$ as a spike test to see if the analyzer sees the spectra? |
How to generate sulphuric acid vapours to test an analyzer? |
How to generate sulphuric acid vapour to test an analyzer? |
$\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$
If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{Cu}$ when equation is balanced with simplest whole numbers?
I tried a lot and finally I got :
$$\ce{4Cu + 18HNO3 + 10H+ -... |
12g of C reacts with 64g of O2 to give a mixture of CO and CO2. Find amount of CO and CO2 at the end of reaction.
now, what I tried was to let x moles of carbon react to give CO2 and y moles to give CO.
C + O2 ---> CO2
x x x
... |
>$\pu{12 g}$ of $\ce{C}$ reacts with $\pu{64 g}$ of $\ce{O2}$ to give a mixture of $\ce{CO}$ and $\ce{CO2}$. Find amount of $\ce{CO}$ and $\ce{CO2}$ at the end of reaction.
What I tried was to let x moles of carbon react to give $\ce{CO2}$ and y moles react to give $\ce{CO}$.
$$\ce{ \underset{x}{C} + \underset{... |
>$\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$
>
>If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{Cu}$ when equation is balanced with simplest whole numbers?
I tried a lot and finally I got :
$$\ce{4Cu + 18HNO3 + 10H... |
I have plotted a cyclic voltagram for my different polymer blends and I am trying to work out the onset of oxidation. picture below is my graph
[![enter image description here][1]][1]
from this website: https://www.ossila.com/pages/cyclic-voltammetry
There is a diagram which shows how the straight line should be... |
I have received conflicting explanations for why the redox reaction in a galvanic cell occurs.
**Explanation 1:**
>Some say that it occurs because the anodic metal dissolves more easily than the cathodic metal, and as such, the anodic metal will dissolve more quickly, becoming a positive cation that releases ele... |
Is it the solution energy or the reduction potentials (or both) that drives a galvanic cell? |
I'm currently doing my FYP assignment on electrochemistry (predominantly on voltaic cells). As I was conducting my research I managed to come off with this topic as stated in the title, however, I am not too keen with the term electrolyte impurities. So, my question is what are electrolyte impurities? Can anyone give a... |
How does electrolyte impurities affect the voltage in a voltaic cell? |
Why is there no exothermic crystallization peak visible during cooling of PLA and no endothermic melting peak visible during a second heating of PLA? |
### Problem
> $\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation
>
> $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$
>
> If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{Cu}$ when equation is balanced with simplest whole numbers?
### Answer
>! 9
### Question
... |
at the moment I am cleaning crucibels in aqua regia. Now I was wondering, whether I could stir it with a standard PTFE stirring bar or not?
I am not sure if it is needed or if the normal flactuation in the liquid is enought but usally stirring makes things better :-)
There is no doublebond in it to be attacked by C... |
Can PTFE be dissolved by aqua regia? |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat}$ is the rate of the reaction under satura... |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat}$ is the rate of the reaction under satura... |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat}$ is the rate of the reaction under satura... |
> [OP] The catalytic efficiency of an enzyme is given by $k_\mathrm{cat}/K_\mathrm{M}$ where $k_\mathrm{cat}$ is the turnover number, or the number of molecules that can be produced per second per active site of an enzyme.
The last part is not quite accurate. $k_\mathrm{cat}$ is the rate of the reaction under satura... |
Interesting Problem and quite a nailbiter.
I will try to sort some of my ideas, even thought this won't be a full answer.
1. This looks like a question from an exam. Did you have any reactions during study with hydrochloric acid and propanoyl chloride (acid chloride of propionic acid). So maybe look into differ... |
At the moment I am cleaning crucibels in aqua regia. I was wondering, whether I could stir it with a standard PTFE stirring bar or not?
I am not sure if it is needed or if the normal flactuation in the liquid is enought but usally stirring makes things better.
There is no doublebond in it to be attacked by Cl-radic... |
Often, expressions for the heat capacity of a gas include a term $R = \pu{8.314 J K-1 mol-1}$. For example, the constant-volume molar heat capacity of a monoatomic gas is
$$C_{v,m} = \frac{3}{2}R$$
Why is this factor of $R$ so ubiquitous? |
Why does the gas constant R appear in heat capacities? |
In the empirical demonstration of the Van der Walls equation at Khan Academy they made a demonstration of the real volume, for example, it was said that it has to be larger than the ideal volume, since the size of the molecules is not disregarded, hence it would be: $ V \ce{real} = V \ce{ideal} + b \cdot n $ ($ b $ was... |
I have the following graphs:
[![enter image description here][1]][1]
[![enter image description here][2]][2]
Taking into account the following graphs, how do I comment on the Gibbs energy values
standard and Gibbs energy of reaction in different situations (a, b and c), and how do I relate the values of the... |
How do I comment on the Gibbs energy values standard and reaction in different situations? |
In the [empirical demonstration of the Van der Walls equation at Khan Academy](https://www.khanacademy.org/science/chemistry/gases-and-kinetic-molecular-theory/non-ideal-gas-behavior/v/van-der-waals-equation), they made a demonstration of the real volume, for example, it was said that it has to be larger than the ideal... |
In the [empirical demonstration of the Van der Waals equation at Khan Academy](https://www.khanacademy.org/science/chemistry/gases-and-kinetic-molecular-theory/non-ideal-gas-behavior/v/van-der-waals-equation), they made a demonstration of the real volume, for example, it was said that it has to be larger than the ideal... |
This is just about question number 6. The answer by Maurice does not address it, and the answer by Surprised Seagull is a bit short.
> [OP] 6. Finally, can the salt bridge be exhausted before the half-cells (whether the solutions or the electrodes)?
Most salt bridges start out with a higher concentration of ions ... |
What (non toxic) light sensitive materials do not burn away at high heat? |
I am performing graduate level research on ZEKE Photoelectron Spectroscopy and central to this form of spectroscopy is Rydberg states and the Stark effect. The Stark effect is caused by an electric field polarizing the species, thereby inducing a non-zero dipole moment. This causes degenerate states to split. However, ... |
I am performing graduate level research on ZEKE Photoelectron Spectroscopy and central to this form of spectroscopy is Rydberg states and the Stark effect. The Stark effect is caused by an electric field polarizing the species, thereby inducing a non-zero dipole moment. This causes degenerate states to split. However, ... |
I am performing graduate level research on ZEKE Photoelectron Spectroscopy and central to this form of spectroscopy is Rydberg states and the Stark effect. The Stark effect is caused by an electric field polarizing the species, thereby inducing a non-zero dipole moment. This causes degenerate states to split. However, ... |
I struggle to understand the use of ion-permeable membrane (or salt bridge). https://en.wikipedia.org/wiki/Concentration_cell
[![enter image description here][1]][1]
If i pour two solutions with different concentration, why do you need the junction between solutions ?
Like this :
[![enter image description he... |
Is it possible to make a concentration cell without ion-permeable membrane? |
> We have an iron dust sample, which is treated with hydrogen chloride in aqueous solution. The solution enters in a reaction with a sodium hydroxide powder, from which we obtain a precipitate. Could we solubilize the precipitate with excess of ammonia? Note that, at the end of the reaction, qualitative chemical anlays... |
The method of production of sea salt usually involves bulk evaporation of seawater. This allows the salt to crystallise and due to it's bigger size it is sold without much processing. On the other hand, the table salt has much smaller size and is processed a lot more than we could assume before it is sold.
This could ... |
> We have an iron dust sample, which is treated with hydrogen chloride in aqueous solution. The solution enters in a reaction with a sodium hydroxide powder, from which we obtain a precipitate. Could we solubilize the precipitate with excess of ammonia? Note that, at the end of the reaction, qualitative chemical analys... |
There are a number of types of [photosensitive glass][1] which change in appearance and chemical reactivity upon exposure, and of [photochromic glass][2], which undergoes *reversible* change in color with radiation.
If you are using this as a surface applique on ceramic, one key factor would be having therml expansi... |
There are a number of types of [photosensitive glass][1] which change in appearance and chemical reactivity upon exposure, and of [photochromic glass][2], which undergoes *reversible* change in color with radiation.
If you are using this as a surface applique on ceramic, one key factor would be having therml expansi... |
I added stearic acid to hot vegetable oil and saw it turned to a sludgy, slush material in about 1.5 hours. Is there any other natural additive that I can add to make it more solid in the same amount of time?
I'm currently trying soy wax + stearic acid.
Are there any other natural alternatives?
|
**_tl;dr_–** "_Gas_" and "_vapor_" aren't mutually exclusive. Generally:
* a **_gas_** is any material that'd fill a volume to its boundaries (ignoring fields like gravity); while
* a **_vapor_** is a gas-like material (including gaseous materials) that's somehow not-far-from a condensed-phase transitio... |
In an allene system(two double bonds next to one another) the substituents on either carbon try to be in the plane perpendicular to each other. For reference see this image:
[![Allene][1]][1]
But as we know that a cyclobutane ring is completely planar, it will prevent this phenomenon and will produce a ring strai... |
In an allene system(two double bonds next to one another) the substituents on either carbon try to be in the plane perpendicular to each other. For reference see this image:
[![Allene][1]][1]
But as we know that a cyclobutane ring is completely planar, it will prevent this phenomenon and will produce a ring strai... |
We were doing Atomic Structure today in class the the prof. did the math of the 'Niels Bohr Model of Atom'. And calculated the value of Total Energy -13.6*z^2/n^2 ev. He went to explain that when the value of n tends to infinity the value of Total Energy comes out to be 0, which, mathematically, is correct. But I could... |
Can the energy of Electron Ever be more than 1? |
[![enter image description here][1]][1]I know that a Grignard would form, but im confused as to whether it would react with Et2O or with methylpyridinium. If it reacts with methylpyridinium, what would the mechanism be like?
[1]: https://i.stack.imgur.com/gtbVq.png |
After formation of the Grignard reagent, would it react with Et2O or methylpyridinium? |
Prof. taught us that
> "An e^- gains or looses only those energies which are equal to difference in two energy levels. That is
> E_1 + \Delta E = E_2 or E_1 + \Delta E = E_3
So **my QUESTION** is that what if we give say 11.3ev and the remainder is -2.2ev so the electron jumps to n=2 where the energy is -3.4 an... |
Prof. taught us that
> "An e^- gains or looses only those energies which are equal to difference in two energy levels. That is
> $E_1 + \Delta E = E_2$ or $E_1 + \Delta E = E_3$
So **my QUESTION** is that what if we give say 11.3ev and the remainder is -2.2ev so the electron jumps to n=2 where the energy is -3... |
Grignard reactions are often carried out in diethyl ether as it is unreactive to them.
It is well established that organometallic reagents, including Grignards, react with Pyridine-N-oxide at the 2-position to give dihydropyridines or ring-opened products depending on work-up [example here][1].
Based on this reac... |
Grignard reactions are often carried out in diethyl ether as it is unreactive to them.
It is well established that organometallic reagents, including Grignards, react with Pyridine-N-oxide at the 2-position to give dihydropyridines or ring-opened products depending on work-up<sup>1</sup>.
Based on this reactivity... |
$\ce{N(CH3)3+}$ has more -I than $\ce{NH3+}$
, this irony happens because if you consider
N-CH3 bond and N-H bond, which is more polar?
Of course N-H bond will be more polar due to more difference in EN value, so that implies electron density will be more on N in $\ce{NH3+}$ than N on $\ce{N(CH3)3+}$.
An... |
Professor taught us that an electron gains or looses only those energies which are equal to difference in two energy levels. That is $E_1 + \Delta E = E_2$ or $E_1 + \Delta E = E_3.$
What if we give, say, $\pu{11.3 eV}$ and the remainder is $\pu{-2.2 eV},$ so the electron jumps to $n = 2$ where the energy is $\pu{-3... |
> If the reaction is repeated with $\pu{2 M}$ ethyl iodide the pyridine concentration decreases as shown below. Give the rate law of the reaction in terms of pyridine and ethyl iodide. Explain your reasoning.
>
> $$
\begin{array}{l|rrrrr}
\hline
t/\pu{min} & 0 & 20 & 40 & 80 & 120\\
\hline
[\ce{C5H5N}]/\pu{M} & ... |
The potential energy of a stationary hydrogen-like atom is described by the equation
$$ U(Z,n) = R_\mathrm{E} \frac{Z^2}{n^2} $$
where $R_\mathrm{E} = \pu{-13.6 eV}$, but it can [equally well][1] be written as
$$ U(Z,n) = \frac{-Zk_e e^2}{2r_n} $$
where $r_n$ is the allowed orbit radius in the Bohr model.... |
We were doing Atomic Structure today in class the the prof. did the math of the 'Niels Bohr Model of Atom'. And calculated the value of total energy $-13.6 z^2/n^2 \pu{eV}$. He went to explain that when the value of n tends to infinity the value of total energy comes out to be 0, which, mathematically, is correct. But ... |
We were asked in class which have the lower $\mathrm{p}K_\mathrm{a}$ values: terminal alkynes or non-terminal alkynes. The teacher told that terminal alkynes have the lowest $\mathrm{p}K_\mathrm{a}$ values without really explaining why.
Please provide some explanation on why do terminal alkynes have lower $\mathrm{... |
The value of the potential at infinity is in some way arbitrary, in the Bohr model we set it for simplicity to zero. What is important as far as predicting whether particles will remain bound or fall apart are relative values of the potential. It is the *slope* of the potential that determines forces that drive particl... |
[![enter image description here][1]][1]
I tried to proceed through following steps:
Step-1: [![Step-1":][2]][2]
Step 2:[![enter image description here][3]][3]
Step-3:[![enter image description here][4]][4]
Step-4: [![enter image description here][5]][5]
[1]: https://i.stack.imgur.com/h5GnS.p... |
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