Chemistry - Chemical Kinetics Question with Solution | TestHub

It is first order reaction in which half-life is independent of initial concentration.
${\mathrm{t}}_{1/2}\propto {\left(\frac{1}{\mathrm{a}}\right)}^{\mathrm{n}-1}$
n = order of reaction
${\mathrm{t}}_{1/2}=\frac{0.693}{\mathrm{k}}$(for first order${\mathrm{t}}_{1/2}$is independent of concentration)