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For a first order reaction, if the time taken for completion of 50% of the reaction is 't' second, the time required for completion of 99.9% of the reaction is n 't'. Find the value of n?

Correct answer

10

Step-by-step solution

t = 0.693 k for first order reaction k = 2.303 t i m e log ⁡ a a - x 0 .693 t 1/2 = 2 .303 time log 100 100 − 99 .9 time = 6.903 0.693 t 1/2 ≈ 10t 1/2

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