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The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1M) is 1/100 th of that of a strong acid (HX, 1M), at 25ºC. The K a of HA is -

1 × 10 –4
1 × 10 –5
1 × 10 –6
1 × 10 –3

Correct answer: 1 × 10 –4

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