Apentix/AP Chemistry/Unit 9: Applications of Thermodynamics/Question
AP Chemistrymediummcq1 pt

For a reaction to be spontaneous, which must be true?

A.ΔG must be positive
B.ΔS must be positive
C.ΔG must be negative
D.ΔH must be negative

Explanation

Core Concept

A reaction is spontaneous when the Gibbs free energy change (ΔG) is negative. This can occur through various combinations of ΔH and ΔS, as determined by ΔG = ΔH - TΔS.

Correct Answer

CΔG must be negative

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