For the equilibrium, A g ⇌ B g , ∆ H is - 40 kJ / mol . If the ratio of the activation energies of the forward E f and reverse E b reactions is 2 3 then:

Step-by-step solution

Activation energy is the minimum amount of energy that must be provided for compounds to result in a chemical reaction. A g ⇌ B g   ;   ∆ H = - 40 kJ/mole ∆ H = E a f - E a b = - 40   k J E a f E a b = 2 3 ⇒   E a f = 2 3 E a b ⇒ 2 3   E a b - E a b = - E a b 3 = - 40   k J E a b = + 120   k J E a f = 2 3 × 120 = 80   k J