The half-life period for the first order reaction is 693 seconds. The rate constant of this reaction would be

Options

A. `0.1 sec^(-1)`
B. `0.01 sec^(-1)`
C. `0.001 sec^(-1)`
D. `0.0001 sec^(-1)`

Answer

C

Explanation

`k=(0.693)/(t_(1//2))=(0.693)/(693)s^(-1)=10^(-4)s^(-1)=0.0001 s^(-1)`