question_answer

A reaction having equal energies of activation for forward and reverse reactions has 

A) \[\Delta S=0\]

B) \[\Delta G=0\]

C) \[\Delta H=0\]

D) \[\Delta H=\Delta G=\Delta S=0\]

Correct Answer: C

Solution :

Energy profile diagram for a reaction is as From the figure, it is clear that \[{{({{E}_{a}})}_{b}}={{({{E}_{a}})}_{t}}+\Delta H\] [Here \[{{({{E}_{a}})}_{b}}=\] activation energy of forward reaction]. If \[{{({{E}_{a}})}_{b}}={{({{E}_{a}})}_{t}}\] then \[\Delta H=0\]