For the reaction A(aq) ⇌ 2 B(aq) + C(aq), K_c = 124.6 at 30 ºC. Calculate ΔG_rxn at 30 ºC when [A] = 0.32 M, [B] = 0.25 M, and [C] = 0.18 M.

–20.60 kJ/mol

–18.41 kJ/mol

+22.55 kJ/mol