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Questions tagged [reference-request]

This tag is for questions looking for a single specific, or a small number of (citable) references.

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8
votes
4answers
8k views

Reason for the formation of azeotropes

Why is it that some liquid mixtures (that exhibit positive/negative deviation from Raoult's law) form azeotropic mixtures at certain compositions? What is the physical reason behind this; are there ...
31
votes
1answer
3k views

What would follow in the series sigma, pi and delta bonds?

I realise, that this question is a stretch, but I was wondering, how would a bonding orbital be called if it was formed from two $f_{x(x^2−3y^2)}$ or $f_{y(3x^2−y^2)}$ orbitals. Have there been any ...
6
votes
1answer
712 views

Is there a list of known rate laws for reactions?

I've been scouring the web for a website/pdf that lists/tabulates reactions and their corresponding rate laws. Something like: \begin{align} \ce{A + B &-> C} & \text{rate}&=1.234[\ce{A}]...
6
votes
0answers
357 views

What is the most accepted explanation of aurophilicity?

Gold has a special property called aurophilicity. Inorganic chemistry by Huheey has some explanation, but that was not enough to clear the conception.
19
votes
3answers
3k views

Conductivity as a function of acid concentration

I have conducted an experiment measuring the conductivity of both hydrochloric acid and sulfuric acid in solution respectively, with varying concentration. Wikipedia as well as a question on the site ...
4
votes
3answers
158 views

Open data in chemistry?

I am a student in computer science, which is a field where sharing research data and source code is very very much recommended. I am looking for sites where data from chemistry experiments could be ...
0
votes
1answer
286 views

How strong is 2,4,6-trinitrobenzenesulfonic acid?

What is pKa or Hammett's function of 2,4,6-trinitrobenzenesulfonic acid? PubChem gives pKa=0.13, but doesn't specify the solvent. Even if it's real value I doubt it's a value for water. Why? Because ...
11
votes
1answer
3k views

Why is electronegativity increasing with oxidation state increase?

I may be a rudimentary fact or something really "not-that-hard-to-figure-out", but In inorganic chemistry it is common to consider a single value of the electronegativity to be valid for most "...
6
votes
3answers
4k views

Periodic table for printing

I there a Good Version of a printable Periodic table Which is minimalistic and gives necessary information only such as - At. Number Element Name At. weight Shell configuration color coding of ...
0
votes
1answer
288 views

In ionic solids such as NaCl, do the cations fill interstital holes in the cation's cubic close pack structure? [duplicate]

Are binary ionic solids like $\ce{NaCl}$ comprised of a cubic close packed structure of the anions with the cations filling interstital holes or do the cations and the anions contribute to the cubic ...
2
votes
2answers
16k views

Determine the Value and Units of the Rate Constant

Consider this initial-rate data at a certain temperature for the reaction described by $$\ce{2NOBr(g) \rightarrow 2NO(g) + Br2(g)}$$ ...
4
votes
1answer
300 views

Is there a pressure dependent function for freezing points of water and carbon dioxide?

I'm trying to determine whether or not certain compounds form solid ice at certain atmospheric pressures. These pressures vary significantly, from 0.001 atm to 800 atm. I understand that there is no ...
4
votes
1answer
422 views

Is oil shinier than water? Why?

The physics part: The part that talks about being shiny, I agree, is mainly physics. But proceed in my question, and you'll see how it's a chemistry one. We know things are shiny if they either ...
7
votes
2answers
663 views

Cell overpotential diagrams

Is there anyone who knows a book where I can find a detailed explanation of cell overpotential diagrams, like the ones shown here? Thanks in advance!
1
vote
3answers
800 views

Luminescent materials under IR radiation?

is there a database somewhere of materials that are luminescent when exposed to Infra Red radiation?
4
votes
0answers
79 views

Is there an authoritative list of chemical reactions/transformations? [closed]

Is there somewhere where I can find an authoritative list of chemical reactions, energy requirements, known catalysts, etc.? If not, how do you know if and how to transform substance A to substance B? ...
12
votes
4answers
1k views

Public API for physical properties

Is there a publicly available API that serves physical property data for organic molecules? Pubchem does not serve properties, ChemSpider closes property access to API calls, and Toxnet only serves ...
-1
votes
1answer
4k views

Molecular structure of all periodic table element molecules exceptional cases etc [closed]

I am searching about some basics in chemistry. I was looking for the molecular structure of all periodic table element molecules. eg: Hydrogen molecule: as $\ce{H2}$; structure: I was able to find ...
1
vote
0answers
37 views

Good resource for chemical equivalence

I need a good resource that explains the concept of chemical equivalence and its various application in physical chemistry. I have not found anything worthwhile from a Google search.
2
votes
1answer
702 views

Good book for foundational chemistry [closed]

I need a good book that explains the basics of chemistry in a lucid and importantly, systematic manner. Most books on this subject are not comprehensive and assume that the reader is well acquainted ...
4
votes
1answer
352 views

Could you suggest me a good coupling method for amide synthesis between tetrahydroisoquinoline and a carboxylic acid?

I want to synthesize an amide using tetrahydroisoquinoline and an unsaturated carboxylic acid which is light sensitive. I tried using DCC as a coupling agent and DCM as the solvent at room temperature,...
4
votes
1answer
2k views

Can someone recommend me a book ( preferably written long ago) that includes all the details of high school chemistry?

The textbook I got from my teacher is shown to be too general. Part of the fun of learning chemistry, for me, comes from knowing the derivation of equations. But most of the derivations are missing ...
6
votes
1answer
7k views

Why is the standard enthalpy of formation of elements in their native forms zero?

Why is the standard enthalpy of formation of $\ce{O2}$ and other reference forms of elements equal to zero? Well, from what I know, bonding releases energy. Also, does anybody know a source for ...
2
votes
0answers
82 views

Nomenclature in Other languages

Even one letter can make a huge difference in Chemistry Nomenclature. So I am looking for credible resources that is specifically published for explaining Nomenclature rules, examples in Spanish. Any ...
9
votes
4answers
2k views

Introduction to Chemistry Textbook - Theory based

TL:DR conditions below Highschool to first year undergraduate level Theory based(Experimentation not wanted) General - Giving a good introduction to all or most areas of Chemistry Rigorous - ...
4
votes
1answer
1k views

Is there an open Chemical database that includes GHS/CLP classifications?

I'm looking for a Chemical database that is up to date (via a firm, experts or crowdsourcing) is open and free to use (best via an API) contains the CLP/GHS classifications for chemicals I have not ...
2
votes
0answers
349 views

Delta G values for Pyruvate--> Alanine vs. Oxaloacetate -> Aspartate ->Asparagine

What are the delta G values for the mammalian (human) biosynthesis of alanine from pyruvate, and for the conversion of oxaloacetate to asparagine? (assuming no particular cellular restriction or other ...
10
votes
1answer
406 views

What general uses do beta-lactam functional groups have?

I am currently working on a mechanistic study that deals with stereoselective $\beta$-lactam formation. I am well aware that there is a class of antibiotics, that involve this particular functional ...
2
votes
1answer
99 views

Book recommendations for protein structure refinement

I’m an undergraduate Chemistry student and I’m currently writing my dissertation about semi-empirical methods, particularly PM7, applied to protein structure refinement from X-ray structure. Could you ...
0
votes
2answers
177 views

Need a pair of compounds that is similar in formula but different in structure

I would like to explain chemical formulas is not representable in terms of the molecular structure of the compound. Any good suggestions of examples?
1
vote
0answers
138 views

Height of potential barrier

Could anyone please help to find the height of the potential barrier between silver and copper or $\ce{Ag-Cu}$. I am working on a piezo-resistive sensor based on copper fabric and silver electrodes. I ...
1
vote
2answers
87 views

Finding the chemical name of SnMg₂O₄

Can somebody help me in identifying the name of $\ce{SnMg2O4}$? Other examples are $\ce{ZnAl2O4}$ (zinc aluminate), $\ce{ZnIn2S4}$ (zinc thioindate). Please kindly provide the reference if possible.
3
votes
1answer
65 views

Atmopsheric Gas IR-Spectra

I am looking for normal resolution IR-spectra of: $\ce{O2}$ and $\ce{N2}$ at high concentrations and; common minor gas in atmosphere: $\ce{H2O}$, $\ce{CO}$, and $\ce{CO2}$ at environmental ...
22
votes
3answers
678 views

What is the isomer distribution in monosubstituted fluorobullvalene?

Bullvalene (tricyclo[3.3.2.02,8]deca-3,6,9-triene) is a fluxional molecule able to interconvert any two carbon atoms through a series of degenerate Cope rearrangements (for more information, see the ...
3
votes
1answer
1k views

Are ther known compounds of Argon? What is their molecular geometry and hybridisation?

Can Argon hybridize orbitals and/or form covalent-like/ionic-like compounds? Is there any study of that? I would be happy to read concrete references. What kind of molecular geometries for argon ...
3
votes
2answers
102 views

Microbial Fuel Cell

Does anyone know of a step by step guide to building a microbial fuel cell? Could someone here on Chem SE possibly provide one? I am looking for something like THIS but for the whole fuel cell and not ...
0
votes
2answers
286 views

Monomers and polymers

At Wikipedia a monomer is defined to be a molecule that may bind chemically to other molecules to form a polymer. A polymer is defined to be a molecule composed of many monomers. These ...
2
votes
0answers
245 views

Graph theory, isomer enumeration and chemical graph theory

Where could we find a good description of graph theory applied to the general problem of isomer enumeration and chemical graph theory?
3
votes
1answer
203 views

What is some advance reference books about alloy that gives a lot historical background and applies a lot of theoretical equation or formulas

What is some advance reference books specifically about alloy that gives a lot historical background and applies a lot of theoretical equation or formulas with explanation? I seem to find nothing ...
1
vote
0answers
91 views

TiO2 nanotube application in cement [closed]

I am perparing for a presentation on the application of TiO2 nanotubes in cement which is a recent topic in cement chemistry. Do you happen to have any papers (or know of any accessible on Internet) ...
0
votes
2answers
465 views

The unit of energy, 1 dm³ atm, is equal to how many calories?

I surfed through the internet and visited a number of chemistry websites but only in vain. I couldn't find an answer. Please help! Your quick response will be appreciated.
3
votes
1answer
3k views

Vibrational Spectrums of HI, HBr, HF, and HCl

Do you all know of any large graphs for the vibrational spectrums of HI, HBr, HF, and HCl? I need graphs that are large enough to see the spacing between the peaks in the spectra of HCl, HBr, and HI. ...
2
votes
2answers
387 views

Atomic coordinates for DNA bases as they appear in a B-form or A-form duplex

Where can I find atomic coordinates for guanosine / cytosine / thymine / adenine (either the ribonucleotide or deoxyribonucleotide bases) where the atoms are configured in the manner we would expect ...
6
votes
1answer
83 views

When was oil discovered to be of biological origin?

Is there an article, book, some account of the discovery that crude oil came from decayed biological material?
4
votes
1answer
131 views

Quotable Literature for the Enthalpy of a Proton

A proton obviously has no electronic energy, no vibrational and no rotational degrees of freedom. Therefore I think it is fair to assume, that $$H(\ce{H+})=\frac32\cdot \mathcal{R}\cdot T$$ holds for ...
2
votes
1answer
360 views

ESI & MALDI Mass Spectrometry: particle mass vs. measurement error

For MALDI or ESI mass spectrometry of large macromolecules (e.g. in the $\approx 100$ kDa to $\approx 10 - 100$ MDa mass range), I've always how measurement error scales with particle mass. Not ...
3
votes
2answers
742 views

Good Introduction to chemistry textbook [closed]

I want to learn basic chemistry, so which textbook do you think I should pick? It should be something both concise and clear. Thank you.
4
votes
5answers
207 views

How to Find Each Element in Nature

I tried to google this but 'element' as a programming term complicated the search. I'm looking for a site or article that covers how one would find each element in nature, in its most abundant form. ...
0
votes
1answer
855 views

Does the outcome of aromatic nitrations depend on the concentrations of nitric acid and sulfuric acid?

I came across a few equation and observed that when concentration of the $\ce{HNO3}$ and $\ce{H2SO4}$ with benzene ($\ce{C6H6}$) or its derivative varied the product changed. I did not perform any ...
11
votes
1answer
938 views

Is Linus Pauling's General Chemistry still readable and up-to-date today?

I've found a Dover edition copy of Pauling's General Chemistry in the bookstore near me. I'd like to know if it's still readable today, I mean, is it still up-to-date? I have no background in ...