fH°fG°| Potassium Sulfate, Alpha (K2SO4) | K2O4S1(cr) | |||||||||||||
| Enthalpy Reference Temperature = Tr = 298.15 K | Standard State Pressure = p° = 0.1 MPa | |||||||||||||
| J·K-1 mol-1 | kJ·mol-1 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T/K | Cp° | S° | -[G°-H°(Tr)]/T | H-H°(Tr) | fH° |
fG° |
log Kf | |||||||
| 0 | 0. | 0. | INFINITE | -25.436 | -1427.199 | -1427.199 | INFINITE | |||||||
| 100 | 79.195 | 61.609 | 277.387 | -21.578 | -1433.305 | -1396.431 | 729.421 | |||||||
| 200 | 110.667 | 127.344 | 186.920 | -11.915 | -1436.295 | -1358.245 | 354.737 | |||||||
| 298.15 | 131.319 | 175.544 | 175.544 | 0. | -1437.706 | -1319.595 | 231.188 | |||||||
| 300 | 131.666 | 176.357 | 175.546 | 0.243 | -1437.723 | -1318.862 | 229.634 | |||||||
| 400 | 147.649 | 216.494 | 180.911 | 14.233 | -1445.229 | -1278.152 | 166.909 | |||||||
| 500 | 160.733 | 250.870 | 191.544 | 29.663 | -1446.060 | -1236.272 | 129.153 | |||||||
| 600 | 172.527 | 281.186 | 204.005 | 46.309 | -1445.397 | -1194.353 | 103.978 | |||||||
| 700 | 186.368 | 308.829 | 217.031 | 64.259 | -1443.295 | -1152.659 | 86.012 | |||||||
| 800 | 199.619 | 334.580 | 230.132 | 83.558 | -1439.835 | -1111.361 | 72.564 | |||||||
| 857.000 | 207.169 | 348.575 | 237.547 | 95.151 | ALPHA <--> BETA | |||||||||
| 900 | 212.865 | 358.856 | 243.098 | 104.182 | 1488.244 1069.491 62.072 | |||||||||
| 1000 | 226.116 | 381.969 | 255.838 | 126.131 | -1481.100 | -1023.335 | 53.454 | |||||||
| 1100 | 239.365 | 404.142 | 268.319 | 149.405 | -1630.753 | -968.729 | 46.001 | |||||||
| 1200 | 252.613 | 425.538 | 280.534 | 174.004 | -1619.296 | -909.041 | 39.570 | |||||||
| PREVIOUS: December 1971 | CURRENT: June 1978 | |||||||||||||
| Potassium Sulfate, Alpha (K2SO4) | K2O4S1(cr) | |||||||||||||
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