Calculate ΔG° for the combustion of ethanol vapor, C
2H
5OH(g), at 750°C in oxygen to form carbon dioxide and water vapor. The following data is valid at 25°C:
| ΔH°f (kJ/mol) | ΔG°f (kJ/mol) |
C2H5OH(g) | –234.8 | –167.9 |
O2(g) | 0 | 0 |
H2O(g) | –241.8 | –228.6 |
CO2(g) | –393.5 | –394.4 |
◦ –1407 kJ/mol
◦ –2151 kJ/mol
◦ –1307 kJ/mol
◦ –4486 kJ/mol
◦ –1377 kJ/mol