Q. 12

The rate constant

Answer :


By Arrhenius equation,


logk = logA - …..1


………2


By equation 1 and 2, we get


=


Ea = 191.47KJ mole-1


When t1/2 is 200 minutes and as it is first order reaction


k = 0.693/t1/2


= 0.693/200


= 3.465*10-3 min-1


= 5.775*10-5 sec-1


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