Tantalum Oxide (Ta2O5) | O5Ta2(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) | ![]() |
![]() |
log Kf | |||||||
0 | 0.000 | 0.000 | INFINITE | -23.041 | -2035.947 | -2035.947 | INFINITE | |||||||
100 | 58.082 | 37.108 | 243.530 | -20.642 | -2042.799 | -1999.955 | 1044.669 | |||||||
200 | 108.311 | 94.161 | 154.766 | -12.121 | -2046.060 | -1955.515 | 510.728 | |||||||
298.15 | 135.034 | 143.114 | 143.114 | 0.000 | -2045.976 | -1911.004 | 334.800 | |||||||
300 | 135.342 | 143.950 | 143.116 | 0.250 | -2045.956 | -1910.167 | 332.590 | |||||||
400 | 147.515 | 184.681 | 148.588 | 14.437 | -2044.314 | -1865.126 | 243.561 | |||||||
500 | 156.862 | 218.636 | 159.293 | 29.671 | -2041.946 | -1820.591 | 190.196 | |||||||
600 | 164.431 | 247.930 | 171.680 | 45.750 | -2039.087 | -1776.582 | 154.665 | |||||||
700 | 170.431 | 273.746 | 184.453 | 62.505 | -2035.876 | -1733.081 | 129.324 | |||||||
800 | 175.197 | 296.825 | 197.083 | 79.794 | -2032.397 | -1690.059 | 110.350 | |||||||
900 | 179.038 | 317.683 | 209.342 | 97.507 | -2028.710 | -1647.487 | 95.618 | |||||||
1000 | 182.753 | 336.753 | 221.144 | 115.610 | -2024.820 | -1605.335 | 83.854 | |||||||
1100 | 184.824 | 354.267 | 232.461 | 133.987 | -2020.837 | -1563.579 | 74.248 | |||||||
1200 | 187.071 | 370.448 | 243.294 | 152.584 | -2016.807 | -1522.187 | 66.259 | |||||||
1300 | 189.021 | 385.500 | 253.661 | 171.391 | -2012.725 | -1481.134 | 59.513 | |||||||
1400 | 190.740 | 399.572 | 263.586 | 190.380 | -2008.590 | -1440.398 | 53.742 | |||||||
1500 | 192.280 | 412.785 | 273.096 | 209.533 | -2004.394 | -1399.959 | 48.751 | |||||||
1600 | 193.673 | 425.239 | 282.220 | 228.831 | -2000.138 | -1359.802 | 44.393 | |||||||
1700 | 194.953 | 437.020 | 290.982 | 248.263 | -1995.845 | -1319.912 | 40.556 | |||||||
1800 | 196.138 | 448.197 | 299.409 | 267.819 | -1991.558 | -1280.276 | 37.153 | |||||||
1900 | 197.246 | 458.831 | 307.522 | 287.488 | -1987.315 | -1240.876 | 34.114 | |||||||
2000 | 198.288 | 468.975 | 315.343 | 307.265 | -1983.130 | -1201.698 | 31.385 | |||||||
2058.000 | 198.870 | 474.652 | 319.753 | 318.783 | CRYSTAL <--> LIQUID | |||||||||
2100 | 199.278 | 478.674 | 322.891 | 327.144 | 1979.005 1162.728 28.921 | |||||||||
2200 | 200.225 | 487.967 | 330.185 | 347.120 | -1974.946 | -1123.952 | 26.686 | |||||||
2300 | 201.133 | 496.887 | 337.240 | 367.188 | -1970.962 | -1085.361 | 24.649 | |||||||
2400 | 202.012 | 505.466 | 344.072 | 387.345 | -1967.065 | -1046.941 | 22.786 | |||||||
2500 | 202.859 | 513.730 | 350.694 | 407.589 | -1963.269 | -1008.681 | 21.075 | |||||||
2600 | 203.685 | 521.702 | 357.119 | 427.916 | -1959.594 | -970.570 | 19.499 | |||||||
2700 | 204.491 | 529.404 | 363.358 | 448.325 | -1956.062 | -932.597 | 18.042 | |||||||
2800 | 205.275 | 536.855 | 369.422 | 468.814 | -1952.699 | -894.753 | 16.692 | |||||||
PREVIOUS: | CURRENT: December 1972 | |||||||||||||
Tantalum Oxide (Ta2O5) | O5Ta2(cr) |
Download table in tab-delimited text format.