The Arrhenius equation for trans isomerisation of 2-butene and 2-butene nitrile are given as follows: 

(a) For 2-butene ${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_3\mathrm{K}\left({\mathrm{S}}^{-1}\right)={10}^{13.8}\times {\exp }^{\left(-263.5{\mathrm{kJmol}}^{-1}/\mathrm{RT}\right)}$

(b) For 2-butene nitrile ${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CH}.\mathrm{CN} \mathrm{K}\text{'}\left({\mathrm{S}}^{-1}\right)={10}^{11}{\exp }^{-214.5{\text{ kJ mol}}^{-1}/\mathrm{RT}}$

The temperature at which K = K'