fH°fG°| Phosphoric Acid (H3PO4) | H3O4P1(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 | -16.980 | -1265.927 | -1265.927 | INFINITE | |||||||
| 100 | 42.844 | 34.528 | 183.578 | -14.905 | -1275.048 | -1226.961 | 640.899 | |||||||
| 200 | 75.856 | 74.598 | 119.270 | -8.935 | -1281.203 | -1176.480 | 307.265 | |||||||
| 298.15 | 106.064 | 110.544 | 110.544 | 0. | -1284.375 | -1124.314 | 196.975 | |||||||
| 300 | 106.608 | 111.202 | 110.546 | 0.197 | -1284.411 | -1123.321 | 195.588 | |||||||
| 315.500 | 111.303 | 116.688 | 110.713 | 1.885 | CRYSTAL <--> LIQUID | |||||||||
| 400 | 136.900 | 146.019 | 115.089 | 12.372 | 1285.789 1069.271 139.633 | |||||||||
| 500 | 167.193 | 179.822 | 124.668 | 27.577 | -1283.719 | -1015.323 | 106.070 | |||||||
| 600 | 197.485 | 212.982 | 136.631 | 45.811 | -1278.830 | -962.056 | 83.754 | |||||||
| 700 | 227.777 | 245.700 | 149.880 | 67.074 | -1271.116 | -909.831 | 67.892 | |||||||
| 800 | 258.069 | 278.092 | 163.885 | 91.366 | -1260.559 | -858.906 | 56.081 | |||||||
| 900 | 288.361 | 310.238 | 178.363 | 118.688 | -1247.143 | -809.475 | 46.981 | |||||||
| 1000 | 318.653 | 342.187 | 193.149 | 149.038 | -1230.854 | -761.692 | 39.787 | |||||||
| PREVIOUS: June 1962 | CURRENT: December 1971 | |||||||||||||
| Phosphoric Acid (H3PO4) | H3O4P1(cr) | |||||||||||||
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