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) fH° fG° 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)

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