The rate equation for a reaction `AtoB` is `r=k[A]^(0)`. If the initial concentration of the reactant is a mol `dm^(-3)`, the half life period of the reaction is

Options

A. `k/a`
B. `a/k`
C. `(2a)/k`
D. `a/(2k)`

Answer

D

Explanation

According to the rate equation given, the reaction is of zero order.
For a zero order reaction `t_(1//2)propa`
or `t_(1//2)=a/(2k)`