Ncert Exercises & Solutions

Which of the following alternatives best describes the reaction A ⇌ B at its halfway point?

1.	\(\Delta G^{\ominus}=0\)	2.	\(\Delta G^{\ominus}>0\)
3.	\(\Delta G^{\ominus}<0\)	4.	\(\Delta G^{\ominus}=-RTlnK\)

Hint:

∆ G^{⊝} = - RT

\ln

K

As we know that,

∆ G^{⊝} = - RT

\ln

K

At the stage of half completion of the reaction,

A ⇌ B,

[A] = [B]

Therefore,

K = 1

Thus,

∆ G^{⊝} = 0