Gibbs Free Energy

Question

What is ∆G° for the reaction CaO(s) + CO₂(g) → CaCO₃(s)? (kJ/mol)

CaO = ∆G°f = -604 (kJ/mol)

CO₂ = ∆G°f = -394.4 (kJ/mol)

CaCO₃ = ∆G°f = -112.8 (kJ/mol)

Answer 1

CaO(s) + CO2(g) ==> CaCO3(s) .. TARGET EQUATION ∆Gº = ?

∆Gº_rxn = ∑∆Gº products - ∑∆Gº reactants

∑∆Gº products = -112.8

∆W∆Gº reactants = -604 + -394.4 = -998.4

∆Gº_rxn = -112.8 - (-998.4)

∆Gº = 885.6 kJ/mol