Question

109. An exothermic reaction X Y has an activation
energy 30 kJ mol-1. If energy change (AE) during
the reaction is - 20 kJ, then the activation energy
for the reverse reaction is :-
(1) 10 kJ
(2) 20 kJ
(3) 50 kJ
(4) - 30 kJ​

Answer 1

We know that,

ΔH=E

f

−E

b

−20=30−E

b

E

b

=(30+20)KJ/mol

=50KJmol