For the first order reaction A → B, the half life is 30 min. The time taken for 75 % completion of the reaction is ____ min. (Nearest integer) Given:…

For the first order reaction $\displaystyle \mathrm{A} \rightarrow \mathrm{B}$, the half life is $\displaystyle 30$ min . The time taken for $\displaystyle 75 \%$ completion of the reaction is $\displaystyle \_\_\_\_$ min. (Nearest integer)Given : $\displaystyle \log 2=0.3010$ $$\begin{aligned} & \log 3=0.4771 \\ & \log 5=0.6989 \end{aligned} $$