For a chemical reaction to be spontaneous only at high temperatures, which conditions must be met?

Question

Quizplus · Accepted Answer

For a reaction to be spontaneous only at high temperatures, it must have a positive ΔH° (endothermic) and a positive ΔS° (increase in entropy). This is because the spontaneity of a reaction at different temperatures can be predicted using the Gibbs free energy equation ΔG° = ΔH° - TΔS°. A positive ΔH° and ΔS° means the reaction becomes more favorable as temperature increases, due to the TΔS° term becoming more significant.

For a Chemical Reaction to Be Spontaneous Only at High