Question

Rate constant (K) of a first order reaction is $5.5\times {10}^{-14}{sec}^{-1}$. Find the half life of reaction.

Answer 1

Half life of first order reaction is,

$t_{\frac{1}{2}}=\frac{0.693}{k}=\frac{0.693}{5.5\times {10}^{-14}}=126\times {10}^{11}seconds$