H°f(kJ/mol)G°f(kJ/mol)This program uses some mathemetical symbols, which may not display correctly
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This program provides drill in calculations of equilibrium constants from
thermodynamic data. The program will show the correct solution
for incorrect answers.
| Substance | H°f(kJ/mol) |
G°f(kJ/mol) |
S°f(J/K. mol) |
| Al(s) | 0 | 0 | 28.3 |
| Al2O3(s) | -1669.8 | -1576.4 | 50.99 |
| CH4(g) | -74.85 | -50.8 | 186.19 |
| CH3OH(g) | -201.2 | -161.9 | 238 |
| CH3OH(l) | -238.6 | -166.2 | 127.0 |
| C2H4(g) | 52.47 | 68.36 | 219.22 |
| CO(g) | -110.5 | -137.2 | 197.5 |
| CO2(g) | -393.5 | -394.4 | 213.6 |
| CS2(g) | 115.3 | 65.1 | 237.8 |
| Cu(s) | 0 | 0 | 33.3 |
| CuO(s) | -155.2 | -127.2 | 43.5 |
| H2(g) | 0 | 0 | 130.6 |
| H2O(g) | -241.82 | -228.6 | 188.72 |
| H2O(l) | -285.84 | -237.19 | 69.94 |
| H2S(g) | -20.2 | -33 | 205.6 |
| NO2(g) | 33.2 | 51.0 | 239.9 |
| N2O4(g) | 9.16 | 97.7 | 304.3 |
| O2(g) | 0 | 0 | 205.0 |
| Zn(s) | 0 | 0 | 41.6 |
| ZnO(s) | -348.0 | -318.2 | 43.9 |