In a reaction carried out at 400 K, 0.01% of the total number of collisions is effective. The energy of activation of the reaction is
13.3 kJ/mol
23.5 kJ/mol
3.2 kJ/mol
30.6 kJ/mol
e−EaRT=0.01100⇒−EaRT=2.3031log10−4⇒Ea=2.303×4×8.314×400=30.6kJ