Q. $N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g) + 22\ kcal$. The activation energy for the forward reaction is 50 kcal. What is the activation energy for the backward reaction?
A) -72 kcal
B) -28 kcal
C) +28 kcal
D) +72 kcal
Explanation
(d)
$N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g) + 22\ kcal$.
$\because$The activation energy for the forward reaction = 50 kcal
$\therefore$ The activation energy for the backward reaction=50+22=72 kcal.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.