Ncert Exercises & Solutions

Which of the following options will be correct for the stage of half completion of the reaction $A ⇌ B$ ?

(1) $∆ G^{⊝} = 0$

(2) $∆ G^{⊝} > 0$

(3) $∆ G^{⊝} < 0$

(4) $∆ G^{⊝} = - RT \ln K$

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