The signs of ΔH° and ΔS° must be ________ and ________,respectively,for a reaction to be spontaneous at high temperatures but nonspontaneous at low temperatures.

Question

Quizplus · Accepted Answer

For a reaction to be spontaneous at high temperatures but nonspontaneous at low temperatures, ΔH° must be positive and ΔS° must be positive. This is because the TΔS° term becomes more significant at high temperatures, making the overall ΔG° negative (spontaneous) when ΔS° is positive.

The Signs of ΔH° and ΔS° Must Be ________ and ________,Respectively,for

The Signs of ΔH° and ΔS° Must Be and ,Respectively,for