GKFix MCQ Question

For a reaction to be spontaneous only at low temperatures, what must be the signs of ΔrH° and ΔrS°?

• A. ΔrH° positive and ΔrS° positive
• B. ΔrH° positive and ΔrS° negative
• C. ΔrH° negative and ΔrS° negative
• D. ΔrH° negative and ΔrS° positive