Niobium Oxide (NbO2) Nb1O2(g)
 
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 -11.254 -197.325 -197.325 INFINITE
100 35.385 230.299 309.095 -7.880 -197.637 -202.080 105.556
200 39.819 256.260 276.805 -4.109 -198.875 -206.055 53.816
250 41.903 265.368 273.633 -2.066 -199.475 -207.779 43.413
 
298.15 43.907 272.921 272.921 0. -199.995 -209.330 36.674
 
300 43.982 273.193 272.922 0.081 -200.014 -209.388 36.458
350 45.916 280.121 273.465 2.330 -200.488 -210.912 31.477
400 47.622 286.366 274.693 4.669 -200.905 -212.373 27.733
450 49.082 292.062 276.311 7.088 -201.280 -213.783 24.815
500 50.311 297.299 278.152 9.573 -201.625 -215.154 22.477
 
600 52.201 306.649 282.141 14.705 -202.266 -217.799 18.961
700 53.531 314.801 286.237 19.995 -202.886 -220.338 16.442
800 54.485 322.015 290.267 25.398 -203.517 -222.789 14.547
900 55.184 328.475 294.160 30.884 -204.176 -225.159 13.068
1000 55.708 334.317 297.888 36.429 -204.872 -227.453 11.881
 
1100 56.110 339.647 301.446 42.021 -205.609 -229.676 10.906
1200 56.424 344.543 304.836 47.649 -206.391 -231.829 10.091
1300 56.674 349.070 308.067 53.304 -207.217 -233.916 9.399
1400 56.875 353.277 311.147 58.982 -208.091 -235.937 8.803
1500 57.039 357.207 314.088 64.678 -209.018 -237.895 8.284
 
1600 57.175 360.893 316.900 70.388 -210.007 -239.788 7.828
1700 57.288 364.362 319.591 76.112 -211.067 -241.617 7.424
1800 57.384 367.640 322.170 81.846 -212.205 -243.382 7.063
1900 57.466 370.744 324.645 87.588 -213.428 -245.081 6.738
2000 57.536 373.694 327.025 93.338 -214.743 -246.713 6.443
 
2100 57.597 376.503 329.314 99.095 -216.157 -248.277 6.176
2200 57.649 379.183 331.521 104.857 -217.675 -249.771 5.930
2300 57.695 381.747 333.649 110.625 -219.306 -251.194 5.705
2400 57.736 384.203 335.705 116.396 -221.062 -252.544 5.496
2500 57.772 386.561 337.692 122.172 -222.956 -253.817 5.303
 
2600 57.804 388.827 339.616 127.951 -225.013 -255.012 5.123
2700 57.832 391.009 341.479 133.732 -227.272 -256.123 4.955
2800 57.858 393.113 343.286 139.517 -256.144 -256.662 4.788
2900 57.881 395.144 345.039 145.304 -257.662 -256.655 4.623
3000 57.902 397.106 346.742 151.093 -259.197 -256.593 4.468
 
3100 57.921 399.005 348.398 156.884 -260.749 -256.480 4.322
3200 57.938 400.845 350.008 162.677 -262.317 -256.318 4.184
3300 57.953 402.628 351.576 168.472 -263.901 -256.107 4.054
3400 57.967 404.358 353.103 174.268 -265.500 -255.846 3.931
3500 57.981 406.038 354.591 180.065 -267.113 -255.539 3.814
 
3600 57.992 407.672 356.043 185.864 -268.741 -255.185 3.703
3700 58.004 409.261 357.460 191.664 -270.382 -254.787 3.597
3800 58.014 410.808 358.844 197.465 -272.037 -254.342 3.496
3900 58.023 412.315 360.196 203.266 -273.705 -253.854 3.400
4000 58.032 413.784 361.517 209.069 -275.385 -253.325 3.308
 
4100 58.040 415.217 362.809 214.873 -277.077 -252.752 3.220
4200 58.047 416.616 364.074 220.677 -278.781 -252.138 3.136
4300 58.055 417.982 365.312 226.482 -280.497 -251.483 3.055
4400 58.061 419.317 366.524 232.288 -282.224 -250.789 2.977
4500 58.067 420.622 367.712 238.094 -283.963 -250.056 2.903
 
4600 58.073 421.898 368.876 243.901 -285.713 -249.283 2.831
4700 58.078 423.147 370.017 249.709 -287.476 -248.472 2.761
4800 58.083 424.370 371.137 255.517 -289.250 -247.623 2.695
4900 58.088 425.567 372.236 261.326 -291.036 -246.737 2.630
5000 58.092 426.741 373.314 267.135 -292.835 -245.815 2.568
 
5100 58.097 427.891 374.373 272.944 -294.647 -244.856 2.508
5200 58.101 429.020 375.413 278.754 -987.145 -234.553 2.356
5300 58.104 430.126 376.435 284.564 -989.316 -220.059 2.169
5400 58.108 431.212 377.439 290.375 -991.477 -205.529 1.988
5500 58.111 432.279 378.427 296.186 -993.725 -190.954 1.814
 
5600 58.114 433.326 379.398 301.997 -996.019 -176.337 1.645
5700 58.117 434.354 380.353 307.809 -998.359 -161.679 1.482
5800 58.120 435.365 381.293 313.621 -1000.745 -146.979 1.324
5900 58.123 436.359 382.218 319.433 -1003.180 -132.240 1.171
6000 58.126 437.336 383.128 325.245 -1005.664 -117.456 1.023
 
PREVIOUS: December 1973 (1 atm) CURRENT: December 1973 (1 bar)
 
Niobium Oxide (NbO2) Nb1O2(g)

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