The temperature dependence of rate constant (k) of a chemical reaction is written in terms of Arrhenius equation, k=A . e−εa/RT .Activation energy (Ea) of the reaction can calculated by plotting

Use the formula, k=Ae−Ea/RT Where,K = rate constantA = FrequencyEa = Activation energyR = Universal gas constantT = Temperature  log K=  logA−Ea2.303R.1T Plot of log  k  Vs.  1T Straight line Slope=−Ea2.303R