Which of the following relationships is correct at constant T and P?

Question

Quizplus · Accepted Answer

At constant temperature and pressure, the change in Gibbs free energy (ΔG) is related to the change in the entropy of the universe (ΔSuniv) by the equation ΔG = -TΔSuniv, where T is the temperature. This relationship indicates that a process is spontaneous if it increases the overall entropy of the universe, which corresponds to ΔG being negative, not positive as suggested by options B and D. ΔG does not directly represent a change in kinetic energy, which eliminates option C. Therefore, only option A correctly describes the relationship between ΔG and the entropy of the universe at constant temperature and pressure.

Which of the Following Relationships Is Correct at Constant T