Energy of activation of an exothermic reaction reaction is _____.

In exothermic reaction heat energy is-

The activation energy of the exothermic reaction ArarrB " is "40"kJ."mol"^(-1) . The heat of reaction is 15"kj.mol"^(-1) . What is the activation energy for the backward reaction ?

Dimerisation of NO_2, is an exothermic reaction. If enthalpy of reaction is /_\H, then the minimum value of activation energy for forward reaction (E_a) will be

Exothermic reaction and Endothermic reaction :

The activation energy of the forward reaction of a reversible exothermic reaction is 50 "kcalmol"^(-1) and the activation energy of the backward reaction is 80 "kcal.mol"^(-1) The heat of this reaction is ..........

Dimerisation of NO_2 , is an exothermic reaction. If enthalpy of reaction is /_\H , then the minimum value of activation energy for forward reaction (E_a) will be

Which one of the following reactions has a smaller energy of activation for the backward reaction ? (i) Exothermic reaction (ii) Endothermic reaction.

An exothermic reaction X to Y has an activation energy 30 KJ "mol"^(-1) . If energy change DeltaE during the reaction is -20 KJ, then the activation energy for the reverse reaction in KJ is __________ . (Integer answer)