For a first order reaction `A rarr` Products, the half life is 100 seconds. The rate constant of the reaction is

Options

A. `6.9 xx 10^(-2) s^(-1)`
B. `6.93 xx 10^(-1) s^(-1)`
C. `6.93 xx 10^(3) s^(-1)`
D. `6.93 xx 10^(-1) s^(-1)`

Answer

C

Explanation

`k=(0.693)/(t^(1//2))=(0.693)/(100s)=6.93xx10^(-3)s^(-1)`