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

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