Which of the following reactions will have the largest equilibrium constant (K) at 298 K? 1) 2 Hg(g) + O2(g) →  2 HgO(s)             ΔG° = -180.8 kJ 2) 3 O2(g)  → 2 O3(g)                             ΔG° = +326 kJ 3) CaCO3(s)  → CaO(s) + CO2(g)          ΔG° =+131.1 kJ 4) Fe2O3(s) + 3 CO(g) →  2 Fe(s) + 3 CO2(g)         ΔG° = -28.0 kJ

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A: Answer: This is the question based on the second law of thermodynamics.

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