Question

Consider the reaction A ? B. If, at equilibrium, the concentration of B is greater than the concentration of A, is the change in standard free energy (ΔG'o) of the reaction: a. Positive b. Negative c. Zero d. Cannot be determined from the information given.

Answer 1

For the reaction A → B at equilibrium with a higher concentration of B, the change in standard free energy (ΔG'u00b0) is negative because the reaction is spontaneous in the forward direction.

Step-by-step explanation:

In the context of the chemical reaction A → B at equilibrium, if the concentration of B is greater than the concentration of A, this implies that the equilibrium constant Keq is greater than one. According to the equation ΔG° = ΔH° - TΔS°, the standard free energy change (ΔG°) can be related to Keq. In general, if Keq > 1, then ΔG° is negative, indicating that the reaction is spontaneous in the forward direction under standard conditions. Thus, in this case, the change in standard free energy (ΔG'u00b0) of the reaction would be negative as the products are favored at equilibrium.