instruction stringlengths 15 21.8k |
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I cannot understand if carbonyl adjacent to alkene stabilises or destabilises it. Generally, we say that more substituted alkene is stable. In those cases attached groups increase electron density of the alkene. In the case of carbonyl, it decreases electron density of the alkene so it should destabilize the alkene.
... |
So this compound is supposed to have all of the stable halogens a part of this molecule ,fluorine,chlorine ,bromine and iodine. Is it really possible?
Link :http://wiki/Bromochlorofluoroiodomethanehttps://en.wikipedia.org/ |
Is bromo(iodo)fluoro(chloro)methane possible? |
I accidentally barbecued some plastic today, making quite a mess. It's a cushion for a lawn chair, so I imagine probably some sort of plastic or polyurethane.
Rather than cleaning melted plastic manually, I'm wondering if its a good idea to just burn it off? The BBQ is a Kamado oven, so it can reach about 350C or 70... |
Does burning plastic completely disintegrate it? Accidentally melted some plastic in a BBQ, wondering if pyrolytic cleaning is an option |
I accidentally barbecued some plastic today, making quite a mess. It's a cushion for a lawn chair, so I imagine probably some sort of plastic or polyurethane.
Rather than cleaning melted plastic manually, I'm wondering if its a good idea to just burn it off? The BBQ is a Kamado oven, so it can reach about $\pu{350 ^... |
You wanted to know if any elements were able to match carbon's ability to form 2D sheets, nanotubes, and buckyballs.
According to https://www.azonano.com/article.aspx?ArticleID=4863 and other sources, graphene-like 2D sheet formation has (thus far) been demonstrated in the following elements:
boron, silicon, germ... |
>A $\pu{20.0 L}$ nickel container was charged with $\pu{0.500 atm}$ of xenon gas and $\pu{1.50 atm}$ of fluorine gas at $\pu{400 ^{\circ}C}$. The xenon and fluorine react to form xenon tetrafluoride. What mass of xenon tetrafluoride can be produced assuming $100\%$ yield?
**Attempt at solution:** From the descriptio... |
(All volumes were measured using a measuring cylinder which has a $\pm\pu{0.5 cm3}$ uncertainty)
- You have a $\pu{50 cm3}$ of $\pu{0.5 M}$ solution to begin with
- You then make a $\pu{0.4 M}$ solution by mixing $\text{40 cm}^3$ of the above solution with $\pu{10 cm3}$ water.
If I'm not mistaken, the uncert... |
> How can glycine act as a buffer at pH 6.00 and why? Please use
> chemical equations to show how it can act as a buffer at this pH
> specifically?
My work:
At pH 6.00 glycine acts as a buffer, because at pH 6.00 the condition is acidic and glycine is an amino acid, so its zwitterion forms an equilibrium, wh... |
Today I studied Slater's rules for calculating the effective nuclear charge. One particular line, "The shielding power of the d and f orbital is lesser in comparison to the p and s orbitals", seems to appear in every single book and website I have studied from.
Slater's rules does not seem to take into account the ... |
Are the rules proposed by Slater for the calculation of effective Z right? |
While reading about elements or compounds I often come across allotropes (or forms) being referred to as $\alpha, \beta, \gamma$ forms. Where does this nomenclature come from and what does it signify?
For example: <br>
<li>Sulphur has two allotropes $\alpha$ rhombic and $\beta$ monoclinic. Out of these two $\alpha$... |
I'm helping my son with Matlab as he is having trouble learning differential equations as they apply to chemical kinetics. His task is to solve for the equilibrium concentrations for a reaction $$\ce{A + B <=> C}.$$
We are given the forward and backward rates and the initial concentrations of the reactants and pro... |
While reading about elements or compounds I often come across allotropes (or forms) being referred to as α, β, γ forms. Where does this nomenclature come from and what does it signify?
Examples:
- Sulfur has two allotropes: α rhombic and β monoclinic. Out of these two α is considered more stable at ordinary tempera... |
From all we know only tautomers should get the same InChI key, or, in case of the second block, if there are lots of stereo centers. However these cases are just collisions, they still have different InChI. I have found a class of molecule pairs, with four real-world examples in ChEBI and PubChem, where both web input ... |
Can cis-trans isomers have same InChI? |
While reading about elements or compounds I often come across allotropes (or forms) being referred to as α, β, γ forms.
Examples:
- Sulfur has two allotropes: α rhombic and β monoclinic. Out of these two α is considered more stable at ordinary temperatures.
- $\ce{SO3}$ has three forms out of which again α is cons... |
If an instrument does have markings that are powers of ten, then finding the precision of the instrument is easy. For example, if a graduated cylinder had markings for every $\pu{0.1 mL}$, or every $\pu{mL}$, or every $\pu{L}$, then it is easy to tell that those measurements will be to the hundredth mL, to the tenth of... |
I'm helping my son with Matlab as he is having trouble learning differential equations as they apply to chemical kinetics. His task is to solve for the equilibrium concentrations for a reaction
$$\ce{A + B <=>[$k_{\mathrm{f}}$][$k_{\mathrm{b}}$] C}.$$
We are given the forward and backward rates and the initial... |
I'm helping my son with Matlab as he is having trouble learning differential equations as they apply to chemical kinetics. His task is to solve for the equilibrium concentrations for a reaction
$$\ce{A + B <=>[$k_{\mathrm{f}}$][$k_{\mathrm{b}}$] C}.$$
We are given the forward and backward rates and the initial... |
I am conducting an organic synthesis experiment involving 2,3,5-tribromothiophene.
The melting point of 2,3,5-tribromothiophene is about 25-28 ℃, so it melts easily during weighing.
Whenever I weigh this compound, it melts soon and wet the weighing paper. So there arises big uncertainty in weight of compound. How can... |
How can I weigh the compound that melts at room temperature? |
[![How to name this structure?][1]][1]
[1]: https://i.stack.imgur.com/owm3w.png
Hey guys,
I am struggling with naming this structure either (E)-2-bromo-1,4-difluoro-3-iodobut-2-ene or (E)-3-bromo-1,4-difluoro-2-iodobut-2-ene.
I am aiming at the question whether there is also a prioritization for IUPAC no... |
I am struggling with naming this structure either **(*E*)-2-bromo-1,4-difluoro-3-iodobut-2-ene** or **(*E*)-3-bromo-1,4-difluoro-2-iodobut-2-ene**.
[![(E)-2-bromo-1,4-difluoro-3-iodobut-2-ene or (E)-3-bromo-1,4-difluoro-3-iodobut-2-ene][1]][1]
I am aiming at the question whether there is also a prioritization for... |
First of all I apologize in advance for my English, I don't speak it very well (I'm Italian).
I have problem in determining the priorities in the molecules.
For example:
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/Qr1I0.png
In this ketamine molecule, what is the order of priorit... |
I have quite an unclear understanding of relative humidity. I am writing my understanding on the topic and please correct me wherever I'm wrong:
**What i understood:**
Let's say H2O has a (saturated) vapor pressure of $x$ atm at a certain temperature. Now Relative humidity (RH) is the ratio of the partial pressur... |
Does $\ce{LiAlH4}$ and $\ce{NaBH4}$ reduce an isolated epoxide? I have two books where both are saying differently. One says it can and other says cannot. On searching the web there was no definite answer. Can they reduce epoxide to diol or something else ?
I am aware of the reduction of the other groups in the pict... |
Does $\ce{LiAlH4}$ and $\ce{NaBH4}$ reduce an isolated epoxide? I have two books where both are saying differently. One says it can and other says cannot. On searching the web there was no definite answer. Can they reduce epoxide to diol or something else ?
I am aware of the reduction of the other groups in the pict... |
Consider for example ethanol being heated in the presence of $\ce Cu$ at 300° C, how does it give ethanal as a product? Copper being in its elemental state is at 0 oxidation state, and since negative oxidation state is not possible for Cu, which means that it should reduce ethanol to ethane. Certainly, high temperatu... |
How does Copper oxidise alcohols? |
Consider for example ethanol being heated in the presence of copper at 300 °C. How does it give ethanal as a product?
Copper being in its elemental state (oxidation state 0). Since negative oxidation state is not possible for Cu, which means that it should reduce ethanol to ethane. Certainly, high temperature shoul... |
How does copper oxidise alcohols? |
I have quite an unclear understanding of relative humidity. I am writing my understanding on the topic and please correct me wherever I'm wrong:
**What i understood:**
Let's say $\ce{H2O}$ has a (saturated) vapour pressure of $x~\pu{atm}$ at a certain temperature. Now Relative humidity (RH) is the ratio of the pa... |
Titration continues until one of the reactants(the one in conical flask) turns out to be a limiting agent as far as I know. From the titration of weak acid and strong base I could learn that the end point is above pH 7 since weak acids do not ionize completely. Till this point I could understand everything. But I had a... |
Titration continues until one of the reactants (the one in conical flask) turns out to be a limiting agent as far as I know. From the titration of a weak acid and a strong base, I could learn that the end point is above $\mathrm{pH \ 7}$ since weak acids do not ionize completely. Till this point I could understand ever... |
**What i understood:**
**Let's say H2O
has a (saturated) vapour pressure of x atm at a certain temperature. Now Relative humidity (RH) is the ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at a given temperature.**
**So what this means is that if RH= 100% then the maxim... |
>What i understood:
>
>Let's say H2O
has a (saturated) vapour pressure of x atm at a certain temperature. Now Relative humidity (RH) is the ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at a given temperature.
>
>So what this means is that if RH= 100% then the maximum am... |
For context, I am a potter and I'm interested in collecting and processing all materials that I use by myself. One of the processes which I use is calcination of certain minerals like feldspar, so that I can turn it into a fine powder.
For reference, most feldspars are mixtures of the three chemicals $\ce{KAlSi_3O_... |
Why does calcined feldspar crumble? |
The acid strength of each compound can be explained, but the acidity *order* is much more difficult to *compare*, because the two compounds are only remotely connected. It is misleading to conclude that the mere presence of a phenyl group somehow connects these molecules. The similarity of the pK$_a$s is likely a coinc... |
How to write the Nernst Equation for this reaction? |
For context, I am a potter and I'm interested in collecting and processing all materials that I use by myself. One of the processes which I use is calcination of certain minerals like feldspar, so that I can turn them into fine powder.
For reference, most feldspars are mixtures of the three chemicals $\ce{KAlSi_3O_... |
A German speaking [mineral atlas][1] states:
> «Man unterscheidet die verschiedenen polymorphen Modifikationen durch
> Voranstellen der griechischen Buchstaben alpha, beta, gamma usw. Die
> Buchstaben entsprechen im Wesentlichen der Erhöhung oder Erniedrigung
> der Umwandlungstemperatur.»
which may be translat... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $Fe^{2+}$ in $T_d$ symmetry. These transitions make up the pre edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on groupy theory and symmetry arguments as much as possible. Still, I am interested in t... |
I was solving a bunch of reactions when I encountered the following:
[![Kolbe-Schmidt and Kolbe-Schmidt Questions][1]][1]
So for the first question:
[![Reimer-Tiemann Suggested Mechanism][2]][2]
This is a Reimer-Tiemann reaction. I felt that the tautomerism would result in the deuterium getting attached to ... |
I have problem in determining the SIP priorities in this molecule:
[![S-Ketamine][1]][1]
In this ketamine molecule, what is the order of priorities? Does the carbon bonded to the ring with chlorine have higher priority compared to the carbon bonded to oxygen?
[1]: https://i.stack.imgur.com/DCzXJ.jpg |
I am trying to synthesizing 1-naphthaleneacetic acid from naphthalene and monochloroacetic acid. I found some patents and papers, and I have tried to synthesis but the yield is low. I used iron powder and $\ce{KBr}$ as catalyst. Papers and some patents mentioned about the yield is 70% but I achieved only 35%. I tried d... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
I was recently looking at a paper about [novel organic dyes for efficient dye-sensitized solar cells][1] and one point the authors made was that out of the two dyes mentioned the one with a larger pi-conjugated system had a red-shift compared to the other one.
I understand that a larger pi-conjugated system would i... |
Why does increased conjugation in a molecule cause the wavelength absorbed to decrease (i.e. why does a red-shift occur)? |
>A $\pu{20.0 L}$ nickel container was charged with $\pu{0.500 atm}$ of xenon gas and $\pu{1.50 atm}$ of fluorine gas at $\pu{400 ^{\circ}C}$. The xenon and fluorine react to form xenon tetrafluoride. What mass of xenon tetrafluoride can be produced assuming $100\%$ yield?
**Attempt at solution:** From the descriptio... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
Brownian motion abounds in nature, but so does drift current. In theoretical models of solutions and colloidal suspensions it is sometimes assumed that advection is negligible. I'm wondering if this is a natural assumption to make, or if it is generally better (e.g. more informative, whether in a positive or negative... |
I have quite an unclear understanding of relative humidity. I am writing my understanding on the topic and please correct me wherever I'm wrong:
**What I understood:**
Let's say $\ce{H2O}$ has a (saturated) vapour pressure of $x~\pu{atm}$ at a certain temperature. Now, relative humidity (RH) is the ratio of the p... |
what would the word equation be for these two? (the NA2CO3 and NaHCO3 were presented as 2 unknown powders, dissolved in water and had phenolphthalein added to identifiy them) |
>What I understood:
>
>Let's say $\ce{H2O}$ has a (saturated) vapour pressure of $x$ atm at a certain temperature. Now Relative humidity (RH) is the ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at a given temperature.
>
>So what this means is that if RH = 100% then the m... |
For context, I am a potter and am interested in collecting and processing all materials that I use by myself. One of the processes which I use is calcination of certain minerals like feldspar, so that I can turn them into fine powder.
For reference, most feldspars are mixtures of the three chemicals: $\ce{KAlSi3O8,... |
what would the word equation be for these two? (the $\ce{Na2CO3}$ and $\ce{NaHCO3 }$were presented as 2 unknown powders, dissolved in water and had phenolphthalein added to identifiy them) |
What would the word equation be for the following twosilutions?
The $\ce{Na2CO3}$ and $\ce{NaHCO3}$ were presented as 2 unknown powders, dissolved in water, and had phenolphthalein added to identify them. |
The correct question (taken from the 2016 JEE Paper is):
[![question no 31, paper 2, chem][1]][1]
**Lithium Aluminium Hydride reduces epoxides**<sup>1</sup>, hence (A) would not give the required product. **LAH also reduces ethers** to primary alcohols, which is an easier way of eliminating the option (A). $\ce{BH3... |
The correct question (taken from the 2016 JEE Paper is):
[![question no 31, paper 2, chem][1]][1]
**Lithium Aluminium Hydride reduces epoxides**<sup>1</sup>, hence (A) would not give the required product. **LAH also reduces ethers** to primary alcohols, which is an easier way of eliminating the option (A). $\ce{BH3... |
I was recently looking at a paper about [novel organic dyes for efficient dye-sensitized solar cells][1] and one point the authors made was that out of the two dyes mentioned the one with a larger pi-conjugated system had a red-shift compared to the other one.
I understand that a larger pi-conjugated system would i... |
Extending [This][1] question further
> Sulfuric acid because of its low volatility can be used to manufacture more volatile acids from their corresponding salts
To use this statement in practice I need to compare the volatility of the acids. My book states that using this principle above $\ce{HF, HCl, HNO3}$ can ... |
Does $\ce{LiAlH4}$ and $\ce{NaBH4}$ reduce an isolated epoxide? I have two books where both are saying differently. One says it can and other says cannot. On searching the web there was no definite answer. Can they reduce epoxide to diol or something else ?
I am aware of the reduction of the other groups in the pict... |
> Compound A is a monoprotic organic acid. If $\pu{25.0 mL}$ of a $\pu{0.456 M}$ solution of A in water was extracted with $\pu{25.0 mL}$ of ethyl ether and it was determined experimentally that $\pu{5.45 mL}$ of $\pu{0.523 M}$ $\ce{NaOH}$ was required to neutralize the bottom layer from the extraction, what is the con... |
You arrive at the correct answer, but the way you get there is a bit messy. (And it only works because both phases have the same volume.) You should be a lot clearer in defining what properties you have been given in the question and which ones you need to calculate. Setting up the equation is a lot more important then... |
Question:
> Classify each of the following ions according to whether they react with water to give a neutral, acidic, or basic
solution:
As a general rule:
>Strong acid + Strong base $\rightarrow$ Neutral solution
>
>Strong acid + weak base $\rightarrow$ acidic solution
>
>Weak acid + Strong base $\rightarrow... |
Question:
> Classify each of the following ions according to whether they react with water to give a neutral, acidic, or basic
solution:
>
> As a general rule:
> >Strong acid + Strong base $\rightarrow$ Neutral solution
>
> >Strong acid + weak base $\rightarrow$ acidic solution
>
> >Weak acid + Strong bas... |
How to trace an energy versus time diagram? |
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/909wi.png
here,should I prefer hydride shift or a product with more $\alpha$ hydrogens?
my doubt is...as hydride shift is easier than methyl shift,the answer should be $a$ or $c$.if methyl shift takes place the alkene formed has more $\... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
I was reading about hybridisation and came across a point saying that $\mathrm{d^3s}$ hybridisation involves only $\mathrm d_{x-y}$, $\mathrm d_{y-z}$, and $\mathrm d_{z-x}$ orbitals and not $\mathrm d_{x^2-y^2}$ nor $\mathrm d_{z^2}$. Why is that so? |
Can H2SO4 oxidise HCl to Cl2? I know that KMnO4 can do it, but my question is consider H2SO4, in here sulphur has +6 oxidation state, and consider KMnO4, where Mn has +7 oxidation state, but Sulphur is more electronegative than Mn, so i guessed that, H2SO4 should be equally good oxidising agent as KMnO4, but as of the ... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
Can $\ce{H2SO4}$ oxidize $\ce{HCl}$ to $\ce{Cl2}$? I know that $\ce{KMnO4}$ can do it, but my question is considering $\ce{H2SO4}$. In sulfuric acid, sulphur is in +6 oxidation state and in $\ce{KMnO4}$, manganese is in +7 oxidation state. But sulphur is more electronegative than manganese, so I guessed that, $\ce{H2SO... |
Oxidizing properties of sulfuric acid: can it oxidize hydrochloric acid to chlorine? |
What would the word equations be for the following two situations?
Initially $\ce{Na2CO3}$ and $\ce{NaHCO3}$ were present as 2 unknown powders, dissolved in water, and phenolphthalein was added to identify them. |
The chemical shift of enantiotopic protons is defined as follows in [Spectroscopy/Homotopic, Enantiotopic, Diastereotopic](https://www.masterorganicchemistry.com/homotopic-enantiotopic-diastereotopic/)
> Enantiotopic protons have the same chemical shift in the vast majority of situations. However, if they are placed... |
If I were to dissolve silver nitrate in water, I would get Ag+ and NO3- ions distributed in the solution. Will they be distributed as aggregates of positively charged silver and negatively charged nitrate ions or as uniformly distributed individual ions? If the latter, would not these ions have very large surface area ... |
How are ions distributed in solutions? What are their surface area to volume ratios, impact on heat transfer capability, compared to nano-particles? |
If I were to dissolve silver nitrate in water, I would get $\ce{Ag+}$ and $\ce{NO3-}$ ions distributed in the solution.
Will they be distributed as aggregates of positively charged silver and negatively charged nitrate ions or as uniformly distributed individual ions?
If the latter, would not these ions have ve... |
When I run a linear-response time-dependent DFT calculation in my favourite electronic structure program, for each excitation I'm given an oscillator strength, $f_i$, and transition dipole moment $\boldsymbol{\mu}_i = \int\Psi_0\hat{\mu}\Psi_i \text{d} \bf{r}$.
What formulae relates the transition dipole moments, th... |
When I run a linear-response time-dependent DFT calculation in my favourite electronic structure program, for each excitation I'm given an oscillator strength, $f_i$, and transition dipole moment $$\boldsymbol{\mu}_i = \int\Psi_0\hat{\mu}\Psi_i \text{d} \bf{r}$$
What formulae relates the transition dipole moments, the... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
A qualitative test for the iodide ion involves reacting the salt solution with copper sulphate. This is said to yield the triiodide ion and the white precipitate of $\ce{Cu2I2}$.
I haven't been able to find a proper name for, or any data on this copper iodide... dimer? The [wiki][1] mentions that it exists in severa... |
Does Copper(I) Iodide have a dimer? |
**Context**: I was checking [this question][1] and in the answer, the compound $\ce{FeS2}$ was named "iron disulphide" (it was previously named "iron persulfide" but later changed after responding to the comments).
The structure of "hydrogen disulfide" is quite analogous to hydrogen peroxide i.e. containing the sulf... |
Why H2S2 is hydrogen disulfide and not hydrogen persulfide? |
Ask yourself this: in problem $a$, are B and C superimposable on each other? You'll find that that is not the case. So those two are enantiomers.
In problem $b$, B and its mirror image are perfectly superimposable on each other, hence identical. This also shows that in problem $a$, B is am optically active molecule, w... |
> Are there any terms and conventions I should be aware of?
**Yes.** IUPAC publishes the [Red Book][1] also called [Nomenclature of Inorganic Chemistry][1] which is the authoritative source of nomenclature terms. Its current version (2005; the only one I will be referencing above the horizontal rule) does *not* cont... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_d$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am interested ... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_\mathrm{d}$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am in... |
The following question has troubled me for a while now.
>A virtual weak acid $\ce{HA}$ dissociates as follows:
>
>$\ce{HA <=> H^+ + A^-}$
>
>with the acid dissociation constant $\ce{K_a = 10^{-3.00}}$
>
>A solution is prepared using a given concentration of $\ce{HA}$, $C_{HA}$ , and a given concentration of its ... |
I've just been taught about the effective nuclear charge and screening effect in school. I'd like to ask and confirm if the z is only defined for valence electrons, if not then why don't we consider the repulsion from the electrons towards the right of the test electron, that through common sense should add to the attr... |
Is the effective nuclear charge only defined for valence electrons? |
A qualitative test for the iodide ion involves reacting the salt solution with copper sulphate. This is said to yield the triiodide ion and the white precipitate of $\ce{Cu2I2}$.
I haven't been able to find a proper name for, or any data on this copper iodide... dimer? [Wikipedia][1] mentions that it exists in sever... |
I am trying to figure out how to explain $1s \rightarrow 3d$ spectroscopic transitions for $\ce{Fe^{2+}}$ in $T_\mathrm{d}$ symmetry. These transitions make up the pre-edge region in K edge X-ray absorption spectroscopy (XAS). My goal is to rely on group theory and symmetry arguments as much as possible. Still, I am in... |
The following question has troubled me for a while now.
>A virtual weak acid $\ce{HA}$ dissociates as follows:
>
>$\ce{HA <=> H^+ + A^-}$
>
>with the acid dissociation constant $K_\mathrm{a} = 10^{-3.00}$.
>
>A solution is prepared using a given concentration of $\ce{HA}$, $C_\ce{HA}$ , and a given concentration... |
Why is ethanol, water and amonium needed for DMG to react with nickel? |
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