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Chemistry : Recent Questions and Answers (Page 12)

Find answers to your questions about Chemistry or help others by answering their Chemistry questions.

Why active mass of solids and pure liquids taken as unity

There is a similar question already asked here and answers provided say that activity of solid is taken as unity because their density dosn't changes... but I still have some...

Asked on 02/05/2021 by Param_1729

1 answer

Which quantum chemistry approximation to use?

I'm just getting started with quantum chemistry using some simple test problems. I have a few of the software packages installed (ASE, Psi4, GPAW etc) and everything is working...

Asked on 02/02/2021 by Alex I

1 answer

Do polycarbonate and/or polyurethane have latex?

I have a severe latex allergy which hinders my health every day via hives, inflammation, and breathing trouble. I am trying to find a cell phone that is not going...

Asked on 02/02/2021

3 answer

What causes rapid nitrogen inversion?

When I asked my teacher whether a nitrogen bonded to 3 unique groups counted as a chiral center, they said that it did not because nitrogen undergoes rapid inversion at...

Asked on 02/01/2021 by vandal11

1 answer

What is the origin of rotational energy barrier in ethane?

What is the origin of rotational barrier in ethane? In most organic chemistry textbooks, we learned that it's originated from steric repulsion between two methyl groups. But recently I heard...

Asked on 01/31/2021

1 answer

Two-electron integral algorithm

I am writing a molecular integral code from scratch. Right now my code have the following structure:loop over shellpair ab: loop over shellpair cd:...

Asked on 01/27/2021 by Erik Kjellgren

1 answer

Am I understanding this IR spectrum correctly?

Is it safe to say that this IR spectrum belongs to a carboxylic acid because of the 3100-2700 stretch indicating...

Asked on 01/23/2021

0 answer

Phenethylhydrazone decomposition mechanism

I was going through a problem in the book Advanced problems in organic chemistry by Chouhan:I figured out that since di-isopropyl amide will...

Asked on 01/21/2021 by Shriom707

0 answer

What do γ (gamma) and λ (lambda) mean in organic chemistry?

From the Wikipedia entry on Cyhalothrin: Pyrethroids such as cyhalothrin are often preferred as an active ingredient in agricultural insecticides because they are more cost-effective and longer acting than natural...

Asked on 01/21/2021 by Kurt Hikes

0 answer

Experimental measurment of thiosulphuric acid decomposition kinetics

ProblemI am trying to do a kinetics analysis on the following reaction: $$ce{Na2S2O3 {(aq)} + 2 HCl {(aq)} -> S {(s)} + 2 NaCl {(aq)} + SO2 {(g)} + H2O...

Asked on 01/20/2021 by Z. Steam

2 answer

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