Question Detail
Question
When ΔH is negative and ΔS is negative, when is the reaction spontaneous?
Correct Answer
Option C is the correct answer.
Detailed Explanation
When ΔH is negative and ΔS is negative, ΔG = ΔH - TΔS becomes negative only at low temperatures where the TΔS term is small. Thus, the reaction is spontaneous at low temperatures.
Hint
The notes provide a table summarizing these relationships.