A negative sign for ΔG indicates that, at constant T and P,
A) the reaction is exothermic.
B) the reaction is endothermic.
C) the reaction is fast.
D) the reaction is spontaneous.
E) ΔS of the system must be greater than zero.

Question

Quizplus · Accepted Answer

A negative ΔG (Gibbs free energy change) indicates that a reaction is spontaneous under constant temperature and pressure conditions. It does not necessarily imply anything about the reaction's thermodynamic nature (exothermic or endothermic), its speed, or the sign of ΔS (entropy change) directly.

A Negative Sign for ΔG Indicates That, at Constant T