An organic compound undergoes first order decomposition. If the time taken for the 60% decomposition is 540 s, then the time required for 90% decomposition will be is ________ s. (Nearest integer). Gi

Question

An organic compound undergoes first order decomposition. If the time taken for the 60% decomposition is 540 s, then the time required for 90% decomposition will be is ________ s. (Nearest integer). Given: in 10 = 2.3; log 2 = 0.3

Prashant Kotian · Accepted Answer

Correct answer: .. First order reaction t = k 1 ln t C C 540 = k 1 ln 100 ….(1) t = k 1 ln 100 ….(2) from (1) and (2) t 540 = 100 ln 100 ln = log log log log   t 540 = 2 . –  = 0.4 t = . 540 = 1350

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