SHMHard
Question
The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1M) is 1/100th of that of a strong acid (HX, 1M), at 25oC. The Ka of HA is
Options
A.
1 10-4
B.
1 10-5
C.
1 10-6
D.
1 10-3
Solution
Rate law for acid catalysed hydrolysis of ester is
rate = k [H+] [ester]
[H+]weak =0.01
HA ⇋ H+ + A-
C-x x x
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