Niobium (Nb) | Nb1(ref) | |||||||||||||
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. | 0. | INFINITE | -5.241 | 0. | 0. | 0. | |||||||
100 | 17.439 | 12.558 | 57.153 | -4.460 | 0. | 0. | 0. | |||||||
200 | 23.091 | 26.878 | 38.685 | -2.361 | 0. | 0. | 0. | |||||||
250 | 24.154 | 32.159 | 36.867 | -1.177 | 0. | 0. | 0. | |||||||
298.15 | 24.694 | 36.464 | 36.464 | 0. | 0. | 0. | 0. | |||||||
300 | 24.711 | 36.616 | 36.464 | 0.046 | 0. | 0. | 0. | |||||||
400 | 25.393 | 43.826 | 37.442 | 2.553 | 0. | 0. | 0. | |||||||
500 | 25.899 | 49.548 | 39.311 | 5.118 | 0. | 0. | 0. | |||||||
600 | 26.347 | 54.309 | 41.424 | 7.731 | 0. | 0. | 0. | |||||||
700 | 26.769 | 58.403 | 43.564 | 10.387 | 0. | 0. | 0. | |||||||
800 | 27.183 | 62.004 | 45.649 | 13.084 | 0. | 0. | 0. | |||||||
900 | 27.593 | 65.230 | 47.648 | 15.823 | 0. | 0. | 0. | |||||||
1000 | 27.999 | 68.158 | 49.555 | 18.603 | 0. | 0. | 0. | |||||||
1100 | 28.405 | 70.846 | 51.370 | 21.423 | 0. | 0. | 0. | |||||||
1200 | 28.798 | 73.334 | 53.098 | 24.284 | 0. | 0. | 0. | |||||||
1300 | 29.179 | 75.654 | 54.745 | 27.182 | 0. | 0. | 0. | |||||||
1400 | 29.589 | 77.831 | 56.317 | 30.120 | 0. | 0. | 0. | |||||||
1500 | 30.062 | 79.888 | 57.820 | 33.102 | 0. | 0. | 0. | |||||||
1600 | 30.606 | 81.846 | 59.261 | 36.135 | 0. | 0. | 0. | |||||||
1700 | 31.221 | 83.719 | 60.645 | 39.226 | 0. | 0. | 0. | |||||||
1800 | 31.903 | 85.523 | 61.977 | 42.381 | 0. | 0. | 0. | |||||||
1900 | 32.639 | 87.267 | 63.263 | 45.608 | 0. | 0. | 0. | |||||||
2000 | 33.430 | 88.961 | 64.506 | 48.911 | 0. | 0. | 0. | |||||||
2100 | 34.275 | 90.612 | 65.710 | 52.296 | 0. | 0. | 0. | |||||||
2200 | 35.187 | 92.228 | 66.878 | 55.768 | 0. | 0. | 0. | |||||||
2300 | 36.192 | 93.813 | 68.015 | 59.336 | 0. | 0. | 0. | |||||||
2400 | 37.317 | 95.377 | 69.123 | 63.010 | 0. | 0. | 0. | |||||||
2500 | 38.635 | 96.926 | 70.204 | 66.805 | 0. | 0. | 0. | |||||||
2600 | 40.233 | 98.471 | 71.261 | 70.745 | 0. | 0. | 0. | |||||||
2700 | 42.283 | 100.027 | 72.298 | 74.868 | 0. | 0. | 0. | |||||||
2750.000 | 43.423 | 100.813 | 72.809 | 77.011 | CRYSTAL <--> LIQUID | |||||||||
2750.000 | 33.472 | 110.596 | 72.809 | 103.914 | TRANSITION | |||||||||
2800 | 33.472 | 111.199 | 73.489 | 105.587 | 0. | 0. | 0. | |||||||
2900 | 33.472 | 112.374 | 74.810 | 108.935 | 0. | 0. | 0. | |||||||
3000 | 33.472 | 113.508 | 76.081 | 112.282 | 0. | 0. | 0. | |||||||
3100 | 33.472 | 114.606 | 77.306 | 115.629 | 0. | 0. | 0. | |||||||
3200 | 33.472 | 115.669 | 78.489 | 118.976 | 0. | 0. | 0. | |||||||
3300 | 33.472 | 116.699 | 79.631 | 122.323 | 0. | 0. | 0. | |||||||
3400 | 33.472 | 117.698 | 80.736 | 125.671 | 0. | 0. | 0. | |||||||
3500 | 33.472 | 118.668 | 81.806 | 129.018 | 0. | 0. | 0. | |||||||
3600 | 33.472 | 119.611 | 82.843 | 132.365 | 0. | 0. | 0. | |||||||
3700 | 33.472 | 120.528 | 83.849 | 135.712 | 0. | 0. | 0. | |||||||
3800 | 33.472 | 121.421 | 84.826 | 139.059 | 0. | 0. | 0. | |||||||
3900 | 33.472 | 122.290 | 85.776 | 142.407 | 0. | 0. | 0. | |||||||
4000 | 33.472 | 123.138 | 86.699 | 145.754 | 0. | 0. | 0. | |||||||
4100 | 33.472 | 123.964 | 87.598 | 149.101 | 0. | 0. | 0. | |||||||
4200 | 33.472 | 124.771 | 88.474 | 152.448 | 0. | 0. | 0. | |||||||
4300 | 33.472 | 125.558 | 89.327 | 155.795 | 0. | 0. | 0. | |||||||
4400 | 33.472 | 126.328 | 90.159 | 159.143 | 0. | 0. | 0. | |||||||
4500 | 33.472 | 127.080 | 90.971 | 162.490 | 0. | 0. | 0. | |||||||
4600 | 33.472 | 127.816 | 91.764 | 165.837 | 0. | 0. | 0. | |||||||
4700 | 33.472 | 128.536 | 92.539 | 169.184 | 0. | 0. | 0. | |||||||
4800 | 33.472 | 129.240 | 93.296 | 172.531 | 0. | 0. | 0. | |||||||
4900 | 33.472 | 129.930 | 94.037 | 175.879 | 0. | 0. | 0. | |||||||
5000 | 33.472 | 130.607 | 94.762 | 179.226 | 0. | 0. | 0. | |||||||
5100 | 33.472 | 131.270 | 95.471 | 182.573 | 0. | 0. | 0. | |||||||
5130.824 | 33.472 | 131.471 | 95.687 | 183.605 | LIQUID <--> IDEAL GAS | |||||||||
5130.824 | 36.434 | 266.042 | 95.686 | 874.064 | FUGACITY = 1 bar | |||||||||
5200 | 36.642 | 266.531 | 97.956 | 876.592 | 0. | 0. | 0. | |||||||
5300 | 36.943 | 267.232 | 101.143 | 880.271 | 0. | 0. | 0. | |||||||
5400 | 37.115 | 267.914 | 104.225 | 883.923 | 0. | 0. | 0. | |||||||
5600 | 37.678 | 269.274 | 110.095 | 891.403 | 0. | 0. | 0. | |||||||
5800 | 38.251 | 270.606 | 115.607 | 898.995 | 0. | 0. | 0. | |||||||
6000 | 38.839 | 271.913 | 120.795 | 906.704 | 0. | 0. | 0. | |||||||
PREVIOUS: December 1973 (1 atm) | CURRENT: December 1973 (1 bar) | |||||||||||||
Niobium (Nb) | Nb1(ref) |
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