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) fH° fG° 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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