With respect to the system only, a reaction with $\Delta$H 0 and $\Delta$S

Name: With respect to the system only, a reaction with $\Delta$H > 0 and $\Delta$S < 0 is predicted to be: A) Spontaneous at all temperatures B) Spontaneous at high temperatures only C) Spontaneous at low temperatures only D) Nonspontaneous at all temperatures
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Question

With respect to the system only, a reaction with $\Delta$H > 0 and $\Delta$S < 0 is predicted to be:
A) Spontaneous at all temperatures
B) Spontaneous at high temperatures only
C) Spontaneous at low temperatures only
D) Nonspontaneous at all temperatures

Quizplus · Accepted Answer

A reaction with $\Delta$H > 0 (endothermic) and $\Delta$S < 0 (decrease in entropy) is nonspontaneous at all temperatures because both factors oppose spontaneity.

With Respect to the System Only, a Reaction With Δ\DeltaΔ H > 0 And

With Respect to the System Only, a Reaction With $\Delta$ H > 0 And