The slope of Arrhenius Plot ( ln k v / s 1/T) of first order reaction is -5 × 10^3 K. The value of E_a of the reaction is. Choose the correct option…

The slope of Arrhenius Plot $\displaystyle \left(\ln \mathrm{k} \mathrm{v} / \mathrm{s} \frac{1}{\mathrm{~T}}\right)$ of first order reaction is $\displaystyle -5 \times 10^3 \mathrm{~K}$. The value of $\displaystyle \mathrm{E}_{\mathrm{a}}$ of the reaction is. Choose the correct option for your answer. [Given $\displaystyle \mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$ ]