Calculate Delta G° for the combustion of ethanol vapor, C2H5OH(g), at 750°C in oxygen to form carbon dioxide and water vapor. The following data is valid at 25°C:

Delta Hf degrees (kJ/mol) Delta Gf degrees (kJ/mol)
C2H5OH -234.8 -167.9
O2 0 0
H2O -241.8 -228.6
CO2 -393.5 -394.4