Questions tagged [reference-request]
This tag is for questions looking for a single specific, or a small number of (citable) references.
5
votes
2answers
128 views
Derivation of time probability distributions for single molecule kinetics
If we have a protein $\ce{A}$ that can bind to protein $\ce{B}$:
$$\ce{A + B <=>[$k_\mathrm{fwd,1}$][$k_\mathrm{rev,1}$] AB}$$
and the bound complex $\ce{AB}$ can be converted into $\ce{C}$:
$...
-2
votes
1answer
24 views
Can anybody recommend me a Calculus Based General Chemistry textbook? [duplicate]
I'm looking for a Calculus Based General Chemistry textbook. I checked Atkins Chemical Principals but I didn't liked it that much. I'd be awesome if I had some more options 😃
Thanks!
3
votes
1answer
46 views
What's the densest alkali metal?
This was asked in a school exam of mine, GCSE curriculum, exactly as it was worded on the title. I found this question a bit vague, and answered it francium, however of course francium is just an ...
1
vote
1answer
71 views
How often is the IUPAC Goldbook Updated?
I was wondering how often does the IUPAC update its Gold Book, ie, IUPAC Compendium of Chemical Terminology - the Gold Book.
It poped in my mind when I saw this question about jellium aromaticity, ...
2
votes
1answer
31 views
Book reference for electronic occupation of TM
Is there a book I can reference that has a table like this? I can't reference an online source on my thesis and all the pictures I have found online like this don't make their reference explicit.
...
7
votes
1answer
85 views
Reference for electronegativities of different metal oxidation states
A long time ago I was researching the effect of the self regulatory response in Fe and Co. I found that my results made sense based on the idea of the electronegativity of the ions considered. I found ...
5
votes
2answers
418 views
Reaction of borax with NaOH
How does borax react with NaOH?
My textbook says that sodium peroxoborate is formed. I couldn't find the reaction anywhere else.
Can anyone verify as well as explain it?
2
votes
0answers
47 views
Which material are piezoelectric buzzers made of?
Which material are these buzzers made of?
Does it depend on the manufacturer or they all are made of the same material? The Wikipedia page does not say anything about the material. I found some ...
1
vote
0answers
37 views
Does Raney nickel deprotect acetals?
I know that Raney nickel can deprotect thioacetals. Can it deprotect acetals as well?
I found this image which shows that it deprotects and removes many protecting groups. But there was no reference ...
13
votes
1answer
979 views
What is the least dense liquid under normal conditions?
What is the least dense liquid under normal conditions, room temperature, one atmosphere of pressure, doesn't combust upon contact with air, also wouldn't kill a human just for being in the same room ...
2
votes
0answers
52 views
Antisymmetrized Product of Strongly Orthogonal Geminal (APSG) method
To get a deeper understanding of electronic structure methods, like Hartree-Fock, MP2, and Coupled Cluster method, there are many small programs (codes) available in Python, C++ or Fortran, for ...
21
votes
2answers
3k views
Storing hydrofluoric acid before the invention of plastics
The first person to synthesize hydrofluoric acid in large quantities was Carl Wilhelm Scheele in 1771. This acid is known for its ability to corrode glass and metals.
What materials were the ...
10
votes
1answer
144 views
Is isobutyl chloride or ethyl chloride more reactive in an SN1 reaction?
Compare the rate of $\mathrm{S_N1}$ reaction in the following compounds:
We see that both compounds form primary carbocations. However, there is more hyperconjugation in the second compound as ...
1
vote
0answers
35 views
Which of these chlorides is more reactive? [duplicate]
We do learn that for $\mathrm{S_N1}$ reaction the rates are tertiary > secondary > primary > methyl. The reasons mentioned are usually inductive and hyper-conjugative effect.
But which of the ...
9
votes
2answers
527 views
How to determine omitted units in a publication
I have found a 1954 paper in J. Am. Chem. Soc. which gives various temperatures in degrees but does not specify units.
A snippet of the introduction is:
Titanium reacts appreciably with fluorine ...
3
votes
0answers
54 views
How to get the second electron affinity of tellurium?
I need the value of the second electron affinity of Te, i.e. the energy change associated with the attachment of an electron to a $\ce{Te-}$ anion
$$\ce{Te- + e- -> Te^{2-}}$$
In the books (e.g. J. ...
0
votes
1answer
75 views
Kb values of N,N-dimethylaniline derivatives [closed]
I need the $K_\mathrm{b}$ values for ortho-, meta- and para- positions of the following compounds:
I've looked and couldn't find them anywhere.
13
votes
2answers
2k views
Melting point of aspirin, contradicting sources
Querying wolfram alpha for the melting point of aspirin (link) returns $\pu{140 °C}$. The Wikipedia page for Aspirin lists $\pu{136 °C}$ instead, citing this book.
How am I supposed to know which ...
1
vote
1answer
25 views
Is there any book or text where ionic radius of elements are given?
So my research has me looking for ionic radius characterization. If anyone could post any link or give the name of any book where ionic radius of all elements are given that would be really great?
-1
votes
2answers
57 views
Equilibrium constant for complex cobalt ion
What is the equilibrium constant for the $\ce{Co(H2O)_6^{2+}(aq) + 4 Cl-(aq) <=> CoCl_4^{2-}(aq) + 6H2O(l)}$?
I've looked at various sources but none seem to yield the actual equilibrium ...
9
votes
2answers
562 views
Inorganic chemistry handbook with reaction lists
There is a handy handbook on common inorganic substances' properties called "Reactivity of Inorganic Substances" (eds. R. A. Lidin, V. A. Molochko, and L. L. Andreeva). It was originally written in ...
1
vote
1answer
76 views
Cerium (CeO) behavior in Glass Polishing?
I am basically working in semiconductor industry and I specifically taking care of CMP (Chemical Mechanical Polishing). We did polish glass (borosilicate type of glass) and we are using slurry (which ...
-1
votes
1answer
38 views
What is the molar extinction coefficient of azorubine (carmoisine, E 122)
I'd be grateful for the molar extinction coefficient ε of azorubine at the absorption maximum (about 520 nm), with an authoritative reference.
1
vote
1answer
44 views
What is a good resource for learning about the intermolecular bonding in water beyond high school? [closed]
I'm writing a paper for school on boiling water at various temperatures and pressures, but only noting cases wherein high temperatures were achieved without boiling under low pressure (metastable ...
4
votes
1answer
42 views
How to show a band structure for water?
This question is generated by my attempt to answer this one. I thought I could demonstrate that electronic conduction in water is possible because of the impact of an electric field on the band ...
0
votes
0answers
16 views
What could some good source for problems in organic chemistry for undergrad level? [duplicate]
I have read Morrison Boyd Organic Chemistry and the exercises given at the back are quite interesting and some of them require a lot of critical thinking. I want to practice more such problems.
Do ...
0
votes
0answers
50 views
Looking for experimental data for titration curves
I am looking for real, open source and free experimental dataset (not image, scan of table) of acid/base titration curves: pH versus titrant volume for many combination (strong/weak acid/base, ...
3
votes
1answer
72 views
Model of an ideal liquid in chemistry
In chemistry there are ideal models/concepts of ideal crystal, ideal gas and even ideal solution, but there is no model/concept of ideal liquid.
In physics (fluid dynamics, to be precise) there is a ...
14
votes
2answers
524 views
How can benzaldehyde have a pKa of 14.9?
There are numerous websites out there which claim that the pKa of benzaldehyde – C6H5CHO – is 14.90. (Just do a Google search for benzaldehyde pka to see what I ...
2
votes
0answers
60 views
Carbon monoxide from activated charcoal filters
We use activated charcoal in air filters of the ventilation system to remove pollutant vapours from the exhaust air. Before the filters, the air is heated a bit to avoid condensation of water. ...
2
votes
0answers
162 views
What studies show that d orbitals don't play an important role in covalent bonding? (> period 2 elements) [closed]
Take a look at all the following molecules: $\ce{SO3^{2-}}$, $\ce{SO2}$, $\ce{SO4^2-}$, $\ce{PF5}$ and many more you can add. In all these there is a controversy of one of these two types:
Is formal ...
8
votes
3answers
304 views
What is Nesbet's theorem?
In a talk by Frank Neese there was a slide with title "Nesbet's theorem" and an equation indicating something like "if your wavefunction has the double excitation amplitudes correct, then you can get ...
1
vote
0answers
58 views
Does CF3COOH undergo decarboxylation ? Why or why not? [closed]
Does $\ce{CF3COOH}$ undergo decarboxylation ? Why or why not?
Attempt:
I feel it should decarboxylate because $\ce{CF3-}$ carbanion must be stable due to fluorine's -I (electron withdrawing) ...
1
vote
1answer
62 views
Does Henry's law depend on curvature of gas/liquid interface?
Could you tell me Henry's law depends on curvature of gas/liquid interface or not? It would be better with references.
3
votes
2answers
150 views
Where can I get potential energy surface for simple molecules?
I'm looking for potential energy functions for simple molecules, such as water or hydrogen sulfide. I only need the region around the equilibrium geometry, preferably as a Taylor series expanded in ...
2
votes
1answer
467 views
Reduction of 2-cyclohexenone to cyclohexanol
Is $\ce{NaBH4}$ a suitable reducing agent for the conversion of 2-cyclohexenone to cyclohexanol?
In Clayden (page 506, second edition), I have found the reduction of cyclopentenone to cyclopentanol ...
3
votes
2answers
129 views
Proof of the chemical potential formula
My textbook as well as Wikipedia both state the formula $\mu_A = \mu_A^0 + RT\ln\{A\}$ which gives the chemical potential $\mu_A$ of a chemical species $A$ as function of the standard chemical ...
1
vote
1answer
86 views
What is the solublity of water in liquid carbon dioxide at low temperature?
The solubility of water in liquid carbon dioxide has been investigated by Hosmer W. Stone in 1943 from
-29 to about 22 °C.
Is there any research done on the solubility of water in liquid $\ce{CO2}$ ...
1
vote
1answer
142 views
Where can I find the standard molar entropy for ammonium bicarbonate?
I'd like to know the standard molar entropy S0solid for ammonium bicarbonate to use in an example in class, to calculate ΔS0 for the reaction, NH4HCO3(s) → NH3(g) + H2O(g) + CO2(g).
Already checked: ...
-1
votes
1answer
103 views
Entropy change of evaporating NaCl [closed]
What is $\Delta S$ for this process?
$$\ce{NaCl(s) -> NaCl(g)}$$
(A reference that I could quote would be ideal.)
-1
votes
1answer
26 views
Source for medium quantities of salts [closed]
Where are good sources for medium quantities (10-1000kg) of chemicals, particularly salts?
For quantities <10kg, I know of lots of options from lab suppliers (Sigma Aldrich, Alfa Aesar, etc). ...
0
votes
1answer
77 views
How to synthesize tetrabutyl titanate from titanium dioxide powder?
How do you synthesize tetrabutyl titanate $(\ce{[CH3(CH2)3O]4Ti})$ from titanium dioxide ($\ce{TiO2}$) powder? As I know, we can get $\ce{TiO2}$ from tetrabutyl titanate, but how can we do the ...
3
votes
2answers
315 views
A basic question about tetramethylammonium hydroxide --strong or weak?
This is a follow-up to the question here. There is an answer claiming that tetramethylammonium hydroxide (TMAH) is a suitable strong base that can be used instead of the usual alkalies to reach pH 14....
1
vote
0answers
34 views
Readings about chiral resolutions at the undergraduate level
Does anyone know of a resource which clearly explains the scientific theory and experimental methods involved in chiral resolutions?
I have access to the American Chemical Society, Tetrahedron, ...
8
votes
0answers
277 views
How are polarizabilities measured experimentally?
Most common spectroscopies that produce either a full spectrum, a tensor, or a scalar value have a specific instrument associated with them that is relatively self-contained and not custom. For ...
5
votes
0answers
440 views
Reaction rate constants for methane combustion
I can't find a rate constant or activation energy for the methane combustion reaction given by:
$$\ce{ CH4 + 2O2 -> CO2 + 2H2O}$$
Do all reactions have a rate constant? The NIST web site lists ...
0
votes
1answer
53 views
Thermal oxidation of gold(I) sulfide
As far as I know the chemistry of $\ce{Ag}$ and $\ce{Au}$ are almost the same; because $\ce{Ag}$ belongs to the 4d series and $\ce{Au}$ belongs to the 5d series, we know the size of 4d and 5d are ...
9
votes
0answers
339 views
Is it possible to self-teach yourself most of organic chemistry and biochemistry without access to a lab or university resources? [closed]
I'm stationed on a US Navy warship and I often wonder if its possible to master these subjects without access to a college instructor. I've been reading introductory books on organic chemistry and ...
9
votes
2answers
431 views
Image of crystal structure
Is there any websites or resources where I can get a good image of a certain crystal structure? In my case I'm looking for lead(II) tungstate $\ce{PbWO4}$ and I can't find a vivid graphic on google (...
4
votes
0answers
100 views
How to tell 'orthokinetic' apart from 'perikinetic' based on their prefixes?
During a test in colloid and surface chemistry, students were asked to distinguish between two terms: orthokinetic and perikinetic coagulation.
The rate of aggregation is in general determined by ...
