Textbook Problem

Given the values of ∆H and ∆S, which of the following changes will be spontaneous at constant T and p?

a. ∆H = + 25 kJ, ∆S = + 5.0 J/K, T = 300. K

b. ∆H = + 25 kJ, ∆S = + 100. J/K, T = 300. K

c. ∆H = − 10. kJ, ∆S = + 5.0 J/K, T= 298 K

d. ∆H = − 10.kJ, ∆S =−40.J/K, T = 200.K