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Q.

The acid catalysed hydrolysis of ethyl acetate is first order with respect to ester and rate constant for the hydrolysis reaction is 0.69 3sec−1. Determine time (in sec) required for 93. 75% hydrolysis of ester. [ln 2 = 0.693]

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answer is 4.

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Detailed Solution

It is known that,

kt=ln⁡[A]0[A]1

0.693×t=ln⁡1006.25

⇒t=4 sec.

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