Question

The Gibbs energy change for a reversible reaction at equilibrium is:

• A. zero
• B. small positive
• C. small negative
• D. large positive

Answer 1

The correct option is A zero

The change in Gibbs free energy associated with a chemical reaction is a useful indicator of whether the reaction will proceed spontaneously.

Since the change in free energy is equal to the maximum useful work which can be accomplished by the reaction which is maximum at equilibrium.

Hence, $△$G = 0 at equilibrium