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