At 298 K, the standard Gibbs free energies of formation are
C₂H₅OH(l) = −174.8 kJ mol⁻¹, CO₂(g) = −394.4 kJ mol⁻¹, and H₂O(l) = −237.1 kJ mol⁻¹.
Calculate the standard Gibbs free energy change, in kJ, for the combustion reaction
C₂H₅OH(l) + 3 O₂(g) → 2 CO₂(g) + 3 H₂O(l).
Report your answer to the nearest kilojoule.