Practice question
Question
A reaction has Δ H = 80.00 kJ/mol , Δ S = 200.0 J/K·mol , and is spontaneous at 450 K. What is Δ G at 450 K?
Explanation
Δ G = Δ H - TΔ S = 80.00 - 450 × 0.2000 = 80.00 - 90.00 = -10.00 kJ/mol . The negative Δ G confirms the reaction is spontaneous at 450 K.
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