All Questions
Tagged with organosulfur-compounds acid-base
10
questions
2
votes
1
answer
562
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which is more acidic thiols or carboxylic acid?
According to me as the key atoms are different so when the h+ is released and each of them gets a negative charge as sulphur is a bigger atom compared to oxygen charge is more dispersed , hence the ...
- 41
0
votes
0
answers
332
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What are the relevant pK values on HEPES?
HEPES is 2-[4-(2-Hydroxyethyl)piperazin-1-yl]ethane-1-sulfonic acid. I have read (MA Al-Ghobashy, Bull of Faculty of Pharmacy, Cairo University 2014; 52: 71-78) that the sulfonic acid group is ...
- 53
3
votes
0
answers
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Is sulphonamide group prone to undergo diazotization?
I wonder if it is not a problem that there is another $\ce{-NH2}$ group in the molecule not connected to aromatic ring and if it can get protonated and react with $\ce{HNO2}$ too, in this case the one ...
- 31
1
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Acidity of 2-sulfopropanedioic acid in water
Sulfuric acid is a strong acid ($\mathrm{p}K_\mathrm{a}$ value below that of $\ce{H3O+}$: completely dissociated in water) at its first deprotonation, but is a weak acid ($\mathrm{p}K_\mathrm{a}$ ...
14
votes
2
answers
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How to remove stain from pavement after having dropped sulfuric acid on it?
I had this car battery that flipped in my car trunk.
When I got it out of there it spilled some acid on the pavement. It's a sulfuric acid battery. I added some baking soda on it and poured some more ...
- 257
3
votes
1
answer
2k
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At what acid concentration does potassium metabisulfite react?
I'm in the process of developing a well preserved food-stuff containing potassium metabisulfite and a number of acids (acetic, ascorbic, malic, tartaric, citric, lactic). Wine-making literature ...
- 33
4
votes
2
answers
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Why does acidity increase going from sulfide to sulfoxide to sulfone?
It is fairly well-known that the acidity of a proton alpha to a sulfide/sulfoxide/sulfone increases in that order. Some pKa values (in DMSO), courtesy of the Evans pKa table:
Traditionally this has ...
- 71.6k
0
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1
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Which affects acidity more, in relation to induction? (Distance vs. quantity)
I already know that the answer is III. I'm just looking for further explanation on how the others compare to each other, mainly IV vs V.
I know that iodine is less electronegative than chlorine, ...
- 71
13
votes
1
answer
526
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What is the structure of trifluoromethanesulfonic acid in the gas phase?
During an interesting discussion in our group’s seminar, the question arose what actually causes trifluoroacetic acid to be a much better nucleophile than trifluoromethanesulfonic acid. Part of the ...
- 68.4k
-2
votes
1
answer
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Reliable data describing acidity of 2,4,6-trinitrobenzenesulfonic acid
I wonder what is the $\mathrm{p}K_\mathrm{a}$ or the value of Hammett's $H_0$ function of 2,4,6-trinitrobenzenesulfonic acid? PubChem gives $\mathrm{p}K_\mathrm{a} = 0.13,$ but doesn't specify the ...
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