Question

Calculate the half life of the reaction $A\to B$, when the initial concentration of $A$ is $0.01$ $mol$ $L^{-1}$ and initial rate is $0.00352$ $mol$ $L^{-1}{min}^{-1}$. The reaction is of the first order.

Answer 1

$t_{1/2}=?$

$A\to B$

Rate $=K\left[A\right]$

$\frac{0.00352}{0.01}=K$

$K=0.352{min}^{-1}$

$t_{1/2}=1.96{min}^{-1}$