2006-07-17 18:51:10 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Absolutly false - vinegar is a dillute solution of Acetic acid and water. Protonation of the acid occurs, though it is quite a weak acid. The pH will still be below 7, as the position of equilibrium of the dissociation reaction will result in a higher concentration of H+ ions in the water.
2006-07-17 19:21:32 · answer #1 · answered by Engineering_rules 2 · 0⤊ 0⤋
Since its vinegar in the solution it is most likely that it will has a ph LOWER than 7 since vinegar is an acid and acids are 0-6
2006-07-17 19:19:12 · answer #2 · answered by James 2 · 0⤊ 0⤋
False. Vinegar is acidic and since 7 is neutral, vinegar must have a pH of less than 7.
2006-07-17 18:54:37 · answer #3 · answered by Ian M 5 · 0⤊ 0⤋
False. Vinegar is a strong acid. pH around 2-3.
2006-07-17 18:55:57 · answer #4 · answered by dimples 3 · 0⤊ 0⤋
As an organic chemist, I have to comment on the one dissenting voice:
"The answer is in fact true.
Most people think that it would be false, but these people fail to take into account the reaction of the carboxylate group with water. This leads to the water breaking up into hydroxide ions, and the caroboxylate group becoming an alchohol group, with the hydrogen removed. "
Source(s):
Smith, J., Advanced Organic Chemistry, 6th ed, published by John Wiley and Sons"
There is no such text, according to Amazon.com. There is March's Advanced Organic (coauthored by Smith, M.) and Carey's Advanced Organic.
Anyway, this is the reaction you're referring to:
CH3COO- + H20 ---> CH3COOH + OH-
The Kb for this reaction is 5.75*10^-10
The Ka, for the deprotonation of acetic acid, is 1.74*10^-5
The latter is favored by 5 orders of magnitude, in terms of the equilibrium constant.
2006-07-17 19:31:01 · answer #5 · answered by niuchemist 6 · 0⤊ 0⤋
The answer is in fact true.
Most people think that it would be false, but these people fail to take into account the reaction of the carboxylate group with water. This leads to the water breaking up into hydroxide ions, and the caroboxylate group becoming an alchohol group, with the hydrogen removed.
2006-07-17 18:59:27 · answer #6 · answered by tgypoi 5 · 0⤊ 0⤋
definitely false. vinegar or CH3COOH has pH 3. and it is NOT a strong acid. it is a weak acid. its equilibrium constant is very small. Ka=1.5 * 10^-5.
2006-07-17 19:02:31 · answer #7 · answered by cool nerd 4 · 0⤊ 0⤋
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2016-12-14 09:35:21 · answer #8 · answered by ? 3 · 0⤊ 0⤋
lower than 7. acidic
2006-07-17 18:54:54 · answer #9 · answered by PhD from my dog 4 · 0⤊ 0⤋