Which of the Following Reactions Will Have the Smallest Equilibrium

question 82

Multiple Choice

Which of the following reactions will have the smallest equilibrium constant (K) at 298 K?

• A) CaCO₃(s) → CaO(s) + CO₂(g) ΔG° =+131.1 kJ
• B) 2 Hg(g) + O₂(g) → 2 HgO(s) ΔG° = -180.8 kJ
• C) 3 O₂(g) → 2 O₃(g) ΔG° = +326 kJ
• D) Fe₂O₃(s) + 3 CO(g) → 2 Fe(s) + 3 CO₂(g) ΔG° = -28.0 kJ
• E) It is not possible to determine without more information.

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