Question #59402
True or False? An exothermic reaction will always be spontaneous if the entropy increases.
Expert's answer
Spontaneous reactions have a ΔG <0 and that ΔG = H - TΔS (Δ= delta).
So, an exothermic reaction that increases in entropy will always be spontaneous. But one which has a negative entropy change will be spontaneous at lower temperatures but not spontaneous at higher temperatures.
So, an exothermic reaction that increases in entropy will always be spontaneous. But one which has a negative entropy change will be spontaneous at lower temperatures but not spontaneous at higher temperatures.
