Which of the Following Is the Equilibrium Constant for the Reaction

Multiple Choice

Which of the following is the equilibrium constant for the reaction below at 25 °C? (R = 8.314 J/K ⋅mol) MgCO3(s) MgO(s) + CO2(g) ; ΔfG° [MgCO3(s) ] = -1028.2 kJ/mol, ΔfG [MgO(s) ] = -568.8 kJ/mol, and ΔfG° [CO2(g) ] = -394.4 kJ/mol.

A) 4.0 × 10^-12
B) 0.97
C) 1.0
D) 1.0 × 10⁴
E) 2.5 × 10¹¹