Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which of the following must be negative for a reaction to be spontaneous at constant temperature and pressure?
Options
A ΔH
B ΔS
C ΔG
Correct Answer
D ΔT
Correct Answer

Option C is the correct answer.

Detailed Explanation

The Gibbs free energy change (ΔG) determines spontaneity under constant temperature and pressure. A negative ΔG (ΔG < 0) indicates that the process is spontaneous in the forward direction.

Hint

Which thermodynamic function is specifically used to predict spontaneity at constant T and P?

Question Info