AP Chemistryeasymcq1 pt
Which pair of ΔH° and ΔS° signs means the reaction is NEVER favored?
A.ΔH° > 0, ΔS° < 0
B.ΔH° < 0, ΔS° > 0
C.ΔH° > 0, ΔS° > 0
D.ΔH° < 0, ΔS° < 0
Explanation
Core Concept
Both terms of ΔG° = ΔH° − TΔS° are positive at every temperature, so ΔG° never turns negative. Such reactions only run when coupled.
Correct Answer
AΔH° > 0, ΔS° < 0
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