0 votes 0 votes For a chemical reaction, the ratio of rate constant at $500\:K$ to that at $400\:K$ is $2.5$. Given $R=8.314\:J$ mol$^{-1}$ $K^{-1}$, the value of activation energy (in $kJ$/mol) is $10.5$ $12.0$ $15.2$ $18.4$ Others gate2018 + – gatecse asked Feb 20, 2018 edited Oct 15, 2020 by soujanyareddy13 gatecse 1.4k points answer See all 0 reply