Q. 12

The rate constant

Answer :

By Arrhenius equation,

logk = logA - …..1


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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