Q. The initial rate of hydrolysis of methyl acetate (1 M) by a weak acid (HA, 1 M) is $1/100^{t h}$ of that of a strong acid (HX, 1M), at 25°C. The $K_{a}$ of HA is

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A

$1\times 10^{- 4}$

B

$1\times 10^{- 5}$

C

$1\times 10^{- 6}$

D

$1\times 10^{- 3}$

Solution:

$K_{a}=C\left(\alpha \right)^{2}=1\times \left(\right.0.01\left(\left.\right)^{2}=1\times 10^{- 4}$

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