Which of the following options will be correct for the stage of half completion of the reaction A B.


• In the viewpoint of thermodynamics, Equilibrium can be explained by the following mathematical equation :


∆G = G + RTlnQ which comes down to


∆G = G + RTlnK and then to


G = - RTlnK (as at Equilibrium ∆G is zero and Kc is = Q


Now, for the reaction A B, at the stage of half completion of the reaction, the concentration of [A] will be equal to [B] i.e. [A] = [B]


Hence, the value of K becomes equal to = =1


The value of ln1 = 0 ,


Hence G = - RTlnK = 0


therefore (i) G = 0 is the correct answer.

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