Tantalum Oxide (Ta2O5) O5Ta2(cr,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 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
2058.000 242.672 533.001 319.753 438.864 TRANSITION
 
2100 242.672 537.903 324.067 449.056 -1857.093 -1165.197 28.983
2200 242.672 549.192 334.045 473.323 -1848.743 -1132.445 26.888
2300 242.672 559.980 343.636 497.591 -1840.560 -1100.071 24.983
2400 242.672 570.308 352.867 521.858 -1832.552 -1068.049 23.245
2500 242.672 580.214 361.764 546.125 -1824.733 -1036.355 21.653
 
2600 242.672 589.732 370.350 570.392 -1817.118 -1004.971 20.190
2700 242.672 598.890 378.646 594.659 -1809.728 -973.875 18.841
2800 242.672 607.716 386.670 618.927 -1802.587 -943.049 17.593
2900 242.672 616.231 394.440 643.194 -1795.721 -912.475 16.435
3000 242.672 624.458 401.971 667.461 -1789.164 -882.130 15.359
 
3100 242.672 632.415 409.277 691.728 -1782.950 -851.997 14.356
3200 242.672 640.120 416.371 715.995 -1777.119 -822.063 13.419
3300 242.672 647.587 423.265 740.263 -1844.626 -791.361 12.526
3400 242.672 654.832 429.970 764.530 -1838.846 -759.529 11.669
3500 242.672 661.866 436.496 788.797 -1833.107 -727.869 10.863
 
3600 242.672 668.703 442.851 813.064 -1827.406 -696.371 10.104
3700 242.672 675.352 449.046 837.331 -1821.742 -665.033 9.389
3800 242.672 681.823 455.087 861.599 -1816.114 -633.844 8.713
3900 242.672 688.127 460.982 885.866 -1810.520 -602.804 8.074
4000 242.672 694.271 466.737 910.133 -1804.960 -571.909 7.468
 
4100 242.672 700.263 472.360 934.400 -1799.432 -541.151 6.894
4200 242.672 706.111 477.857 958.667 -1793.936 -510.528 6.349
4300 242.672 711.821 483.231 982.935 -1788.471 -480.034 5.831
4400 242.672 717.400 488.490 1007.202 -1783.036 -449.670 5.338
4500 242.672 722.853 493.638 1031.469 -1777.632 -419.428 4.869
 
4600 242.672 728.187 498.679 1055.736 -1772.258 -389.306 4.421
4700 242.672 733.406 503.618 1080.003 -1766.916 -359.298 3.993
4800 242.672 738.515 508.459 1104.271 -1761.604 -329.405 3.585
4900 242.672 743.519 513.205 1128.538 -1756.324 -299.621 3.194
5000 242.672 748.421 517.860 1152.805 -1751.077 -269.945 2.820
 
PREVIOUS: CURRENT: December 1972
 
Tantalum Oxide (Ta2O5) O5Ta2(cr,l)

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