In which case must a reaction be spontaneous at all temperatures?

Question

Quizplus · Accepted Answer

For a reaction to be spontaneous at all temperatures, the Gibbs free energy change (ΔG) must be negative. ΔG is related to ΔH and ΔS through the equation ΔG = ΔH - TΔS. Since temperature is always positive, in order for ΔG to be negative, either ΔH must be negative or ΔS must be positive. Choice B satisfies the requirement for both a negative ΔH and a positive ΔS, making the reaction spontaneous at all temperatures.

In Which Case Must a Reaction Be Spontaneous at All