When is there a need to determine G?

A. When H > 0 and S < 0
B. When H > 0 and S = 0
C. When H > 0 and S > 0
D. When H = 0 and S < 0

Sofie, this makes no sense. It depends upon what you want to know from G. Is it spontaneous, is it non-spontaneous, is it at equilibrium, do you want to know K or Q, etc.