The chemical reaction that causes aluminum to corrode in air is given by
4Aln + 3O2 → 2Al2O3
in which at 298 K
ΔH°rxn = -3352 kJ
ΔS°rxn = - 625.1 J/K
What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K.
Express your answer as an integer and include the appropriate units.