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The general defination of the activation...

The general defination of the activation energy `E_(a)` of any rate process, applicable whether or not `E_(a)` varies with T, is:
`E_(a)=RT^(2).(d(l n k))/(dT)`
For a first order reaction, the dependence of rate constant on temperature is given as:
`l n k[//s^(-1)]=27.72-(2.0xx10^(4))/(T[//K]`
The pre- exponential factor of reaction is:

A

`20^(40) s^(-1)`

B

`e^(27.72) s^(-1)`

C

`2^(4)s^(-1)`

D

`2^(400) s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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