Table 11.
Entropy and entropic energy changes, including vibrational heat capacity.
| Temp K | NH3, S, ST | N2, S, ST | H2, S, ST | TΔS + ΔCv |
|---|---|---|---|---|
| J/K, kJ/mole | J/K, kJ/mole | J/K, kJ/mole | kJ/mole | |
| 400 * | 207.964, 83.186 | 200.189, 80.076 | 138.898, 55.559 | −80.381 |
| 500 | 218.758, 109.379 | 206.683, 103.342 | 145.391, 72.696 | −102.672 |
| 600 | 228.224, 136.934 | 211.989, 127.193 | 150.697, 90.418 | −124.979 |
| 700 | 236.721, 165.705 | 216.475, 151.533 | 155.183, 108.628 | −146.007 |
| 800 | 244.485, 195.588 | 220.361, 176.289 | 159.069, 127.255 | −166.878 |
| 900 | 251.663, 226.497 | 223.788, 201.409 | 162.496, 146.246 | −196.153 |
| 1000 | 258.342, 258.342 | 226.854, 226.854 | 165.562, 165.562 | −206.856 |
* Ammonia triple point is near 400 K, condensing at 237 K at 1 atm, presenting an interesting problem.