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Chemistry : Recent Questions and Answers (Page 5)

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

What is the most acidic proton of 2-methylcyclopent-2-en-1-one?

In an acid-base reaction of $ce{HO-}$ with 2-methylcyclopent-2-en-1-one, which is the most acidic proton? I had assumed it was one of them coming off C-5...

Asked on 11/28/2021 by vitno

1 answer

Szabo and Ostlund's calculation of repulsion integral on page 172 via A.41

Returning to Szabo & Ostlund after a hiatus I tried to recreate his STO-3G calculation for HeH+ which begins on p. 168. It all went fine except for the two-electron,...

Asked on 11/28/2021

1 answer

Formal charge in a co-ordinate covalent bond

In coordinate bond, Does the donor atom have positive formal charge and the acceptor atom have negative formal charge? For example, in carbon monoxide the oxygen atom donates its lone...

Asked on 11/28/2021 by Wawa Abbass

1 answer

Is methylchloride reaction with water SN1 or SN2

I wanted to know if methylchloride reacting with $ce{H2O}$ would be SN1 or SN2. Methyl halide would not react using SN1 because methyl carbocation is very unstable but it...

Asked on 11/28/2021

0 answer

Why is 4-hydroxypyridine more acidic than benzoic acid?

4-hydroxypyridine (or 4-pyridone) has a $mathrm{p}K_mathrm{a}$ in the ballpark of $3$ to $3.33:^1$ (in the pdf linked below, the $mathrm{p}K_mathrm{a}$ of 1-methyl-4-pyridone has...

Asked on 11/25/2021 by user91457

2 answer

What is the dimension of Avogadro's constant?

What is the dimension of Avogadro's constant ($N_mathrm{A}$). On Wikipedia it says it is dimensionless, but in Nigel Wheatley's article (pdf) On the...

Asked on 11/25/2021 by user96130

2 answer

What should be the oxidation state of oxygen in HOF (hypofluorous acid)?

What should be the oxidation state of oxygen in $ce{HOF}$ (hypofluorous acid)? Sources on the internet have confused me. Most state its oxidation state to be 0, while...

Asked on 11/23/2021

4 answer

Data analysis in TCSPC for fluorescene decay (reconvolution with measured IRF)

I am trying to understand the data analysis of fluorescence decay counts measured by TCSPC technique, particularly with reconvolution with measured IRF. I am able to get the fitted counts...

Asked on 11/23/2021 by Crops

0 answer

Difference between dissociation energy and dissociation temperature for water?

I was trying to find the temperature at which water dissociates into hydrogen and oxygen, and so I came across this Wikipedia page. It states that it...

Asked on 11/19/2021 by Abanob Ebrahim

1 answer

Equilibrium Constants for Diatomic Gases at High Temperatures

I'm new here and I haven't taken chemistry beyond high school, so please forgive the ignorance. I am reading a book about hypersonic aerodynamics, and I am trying to connect...

Asked on 11/17/2021

0 answer

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