Using the Standard Free Energies of Formation:
BaCO₃(s) $\Delta$ G°_f = -1139

Using the standard free energies of formation:
BaCO₃(s) , $\Delta$ G°_f = -1139.0 kJ mol^-1
BaSO₄(s) , $\Delta$ G°_f = -1353.0 kJ mol^-1
CO₂(g) , $\Delta$ G°_f = -394.4 kJ mol^-1
SO₃(g) , $\Delta$ G°_f = -370.0 kJ mol^-1
Calculate the standard free energy change, $\Delta$ G°, for the reaction:BaCO₃(s) + SO₃(g) $\rarr$ BaSO₄(s) + CO₂(g)

A) +189.6 kJ mol^-1
B) -238.4 kJ mol^-1
C) +472.4 kJ mol^-1
D) +238.4 kJ mol^-1
E) -2516.4 kJ mol^-1