question_answer

A reaction having equal energies of activation for forward and reverse reactions has [NEET 2013]

A) \[\Delta S=0\]

B) \[\Delta G=0\]

C) \[\Delta H=0\]

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

Correct Answer: C

Solution :

[c] 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      \[\Delta H=0\]