Tantalum Oxide (Ta2O5) O5Ta2(l)
 
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              
100              
200              
 
298.15 135.034 183.050 183.050 0.000 -1957.171 -1834.107 321.328
 
300 135.342 183.886 183.052 0.250 -1957.151 -1833.343 319.213
400 147.515 224.617 188.524 14.437 -1955.509 -1792.296 234.050
500 156.862 258.572 199.230 29.671 -1953.141 -1751.754 183.005
 
600 164.431 287.866 211.616 45.750 -1950.282 -1711.739 149.020
700 170.431 313.682 224.389 62.505 -1947.071 -1672.231 124.783
800 175.197 336.761 237.019 79.794 -1943.592 -1633.204 106.637
900 179.038 357.619 249.279 97.507 -1939.905 -1594.624 92.550
1000 182.753 376.690 261.080 115.610 -1936.016 -1556.467 81.301
 
1100 184.824 394.203 272.397 133.987 -1932.032 -1518.704 72.117
1200 187.071 410.384 283.230 152.584 -1928.002 -1481.306 64.480
1300 189.021 425.436 293.597 171.391 -1923.920 -1444.247 58.031
1400 190.740 439.508 303.522 190.381 -1919.785 -1407.503 52.515
 
1400.000 190.740 439.508 303.522 190.381 GLASS <--> LIQUID
1400.000 242.672 439.508 303.522 190.381 TRANSITION
 
1500 242.672 456.251 313.152 214.648 -1910.474 -1371.238 47.751
 
1600 242.672 471.913 322.591 238.915 -1901.249 -1335.590 43.603
1700 242.672 486.624 331.811 263.182 -1892.121 -1300.516 39.960
1800 242.672 500.495 340.801 287.450 -1883.122 -1265.977 36.738
1900 242.672 513.616 349.554 311.717 -1874.282 -1231.933 33.868
2000 242.672 526.063 358.071 335.984 -1865.606 -1198.350 31.298
 
 
2058.000 242.672 533.001 362.904 350.059 CRYSTAL <--> LIQUID
 
2100 242.672 537.903 366.355 360.251 1857.093 1165.197 28.983
2200 242.672 549.192 374.411 384.518 -1848.743 -1132.445 26.888
2300 242.672 559.980 382.247 408.786 -1840.560 -1100.071 24.983
2400 242.672 570.308 389.869 433.053 -1832.552 -1068.049 23.245
2500 242.672 580.214 397.286 457.320 -1824.733 -1036.356 21.653
 
2600 242.672 589.732 404.506 481.587 -1817.118 -1004.971 20.190
2700 242.672 598.890 411.537 505.854 -1809.728 -973.875 18.841
2800 242.672 607.716 418.386 530.122 -1802.587 -943.049 17.593
2900 242.672 616.231 425.063 554.389 -1795.721 -912.475 16.435
3000 242.672 624.458 431.573 578.656 -1789.164 -882.130 15.359
 
3100 242.672 632.415 437.924 602.923 -1782.950 -851.997 14.356
3200 242.672 640.120 444.123 627.190 -1777.119 -822.063 13.419
3300 242.672 647.587 450.176 651.458 -1844.626 -791.361 12.526
3400 242.672 654.832 456.089 675.725 -1838.846 -759.529 11.669
3500 242.672 661.866 461.869 699.992 -1833.107 -727.869 10.863
 
3600 242.672 668.703 467.519 724.259 -1827.406 -696.371 10.104
3700 242.672 675.352 473.047 748.526 -1821.742 -665.033 9.389
3800 242.672 681.823 478.456 772.794 -1816.114 -633.844 8.713
3900 242.672 688.127 483.752 797.061 -1810.520 -602.804 8.074
4000 242.672 694.271 488.939 821.328 -1804.960 -571.909 7.468
 
4100 242.672 700.263 494.020 845.595 -1799.432 -541.151 6.894
4200 242.672 706.111 499.001 869.862 -1793.936 -510.528 6.349
4300 242.672 711.821 503.884 894.130 -1788.471 -480.034 5.831
4400 242.672 717.400 508.673 918.397 -1783.036 -449.670 5.338
4500 242.672 722.853 513.372 942.664 -1777.632 -419.428 4.869
 
4600 242.672 728.187 517.984 966.931 -1772.258 -389.306 4.421
4700 242.672 733.406 522.513 991.198 -1766.916 -359.298 3.993
4800 242.672 738.515 526.960 1015.466 -1761.604 -329.405 3.585
4900 242.672 743.519 531.328 1039.733 -1756.324 -299.621 3.194
5000 242.672 748.421 535.621 1064.000 -1751.077 -269.945 2.820
 
PREVIOUS: CURRENT: December 1972
 
Tantalum Oxide (Ta2O5) O5Ta2(l)

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