For a reaction, given below is the graph of ln k vs 1/T. The activation energy for the reaction is equal to \ \ \ \ cal mol^-1. (nearest integer)…

For a reaction, given below is the graph of $\displaystyle \ln \mathrm{k}$ vs $\displaystyle \frac{1}{\mathrm{~T}}$. The activation energy for the reaction is equal to \_\_\_\_ cal $\displaystyle \mathrm{mol}^{-1}$. (nearest integer) (Given : $\displaystyle \mathrm{R}=2 \mathrm{cal} \mathrm{K}^{-1} \mathrm{~mol}^{-1}$ )