Statement 1: A system at equilibrium has Δ G = 0 for the reaction and shows no net change in composition.
Statement 2: Δ G^° of every reaction is zero at equilibrium.

Question

Statement 1: A system at equilibrium has Δ G = 0 for the reaction and shows no net change in composition. Statement 2: Δ G ° of every reaction is zero at equilibrium.

TestHub · Accepted Answer

At equilibrium the Gibbs energy is at its minimum, so Δ G = 0 and the composition no longer changes, and Statement 1 is correct Δ G = Δ G^° + RTln Q

At equilibrium Q = K, so Δ G^° = -RTln K

This is zero only for K = 1, so Δ G^° is not zero for every reaction and Statement 2 is incorrect

Statement 1 is correct and Statement 2 is incorrect, option (c).

Chemistry - Chemical Equilibrium Question with Solution | TestHub

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