Niobium (Nb) Nb1(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 -8.354 729.923 729.923 INFINITE
100 28.819 153.823 212.891 -5.907 731.590 717.463 -374.764
200 29.932 174.240 189.016 -2.955 732.443 702.971 -183.597
250 30.144 180.945 186.756 -1.453 732.761 695.565 -145.330
 
298.15 30.159 186.259 186.259 0. 733.037 688.375 -120.600
 
300 30.155 186.446 186.260 0.056 733.047 688.098 -119.809
350 29.969 191.082 186.626 1.560 733.305 680.586 -101.572
400 29.646 195.064 187.438 3.050 733.534 673.039 -87.890
450 29.253 198.534 188.482 4.523 733.730 665.464 -77.245
500 28.840 201.594 189.644 5.975 733.894 657.870 -68.727
 
600 28.050 206.781 192.083 8.819 734.125 642.642 -55.947
700 27.365 211.052 194.497 11.589 734.239 627.384 -46.816
800 26.785 214.668 196.798 14.296 734.248 612.117 -39.967
900 26.294 217.793 198.961 16.949 734.162 596.855 -34.641
1000 25.880 220.542 200.984 19.557 733.991 581.607 -30.380
 
1100 25.533 222.991 202.876 22.127 733.741 566.380 -26.895
1200 25.248 225.200 204.646 24.666 733.419 551.179 -23.992
1300 25.023 227.212 206.305 27.179 733.033 536.008 -21.537
1400 24.857 229.060 207.866 29.672 732.589 520.869 -19.434
1500 24.748 230.771 209.336 32.152 732.087 505.763 -17.612
 
1600 24.696 232.366 210.726 34.624 731.526 490.693 -16.019
1700 24.700 233.863 212.044 37.093 730.904 475.659 -14.615
1800 24.759 235.276 213.296 39.566 730.221 460.664 -13.368
1900 24.872 236.618 214.488 42.047 729.475 445.709 -12.253
2000 25.034 237.898 215.627 44.542 728.667 430.794 -11.251
 
2100 25.244 239.124 216.717 47.055 727.796 415.922 -10.345
2200 25.496 240.304 217.762 49.592 726.860 401.092 -9.523
2300 25.788 241.444 218.767 52.156 725.856 386.307 -8.773
2400 26.115 242.548 219.735 54.751 724.777 371.567 -8.087
2500 26.472 243.621 220.669 57.380 723.611 356.873 -7.456
 
2600 26.854 244.667 221.572 60.046 722.338 342.229 -6.875
2700 27.256 245.688 222.446 62.751 720.920 327.635 -6.338
2800 27.675 246.686 223.294 65.498 692.947 313.582 -5.850
2900 28.105 247.665 224.118 68.287 692.389 300.044 -5.404
3000 28.544 248.625 224.919 71.119 691.874 286.523 -4.989
 
3100 28.986 249.568 225.699 73.995 691.403 273.020 -4.600
3200 29.430 250.496 226.459 76.916 690.977 259.530 -4.236
3300 29.871 251.408 227.202 79.881 690.595 246.054 -3.895
3400 30.309 252.306 227.927 82.890 690.257 232.588 -3.573
3500 30.740 253.191 228.636 85.943 689.962 219.131 -3.270
 
3600 31.162 254.063 229.330 89.038 689.710 205.683 -2.984
3700 31.576 254.922 230.010 92.175 689.500 192.241 -2.714
3800 31.979 255.770 230.677 95.353 689.330 178.804 -2.458
3900 32.371 256.606 231.331 98.570 689.201 165.370 -2.215
4000 32.751 257.430 231.973 101.827 689.110 151.940 -1.984
 
4100 33.120 258.243 232.604 105.120 689.056 138.512 -1.765
4200 33.479 259.046 233.224 108.450 689.039 125.084 -1.556
4300 33.826 259.838 233.834 111.816 689.057 111.656 -1.356
4400 34.164 260.619 234.434 115.215 689.110 98.228 -1.166
4500 34.493 261.391 235.024 118.648 689.195 84.798 -0.984
 
4600 34.814 262.152 235.606 122.114 689.313 71.365 -0.810
4700 35.127 262.904 236.179 125.611 689.463 57.930 -0.644
4800 35.436 263.647 236.743 129.139 689.644 44.492 -0.484
4900 35.740 264.381 237.300 132.698 689.856 31.049 -0.331
5000 36.041 265.106 237.849 136.287 690.098 17.601 -0.184
 
5100 36.342 265.823 238.390 139.906 690.370 4.149 -0.042
 
5130.824 36.434 266.042 238.556 141.028 FUGACITY = 1 bar
 
5200 36.642 266.531 238.925 143.555 0. 0. 0.
5300 36.943 267.232 239.452 147.234 0. 0. 0.
5400 37.115 267.914 239.972 150.887 0. 0. 0.
5500 37.396 268.598 240.486 154.612 0. 0. 0.
 
5600 37.678 269.274 240.994 158.366 0. 0. 0.
5700 37.963 269.943 241.496 162.148 0. 0. 0.
5800 38.251 270.606 241.993 165.959 0. 0. 0.
5900 38.543 271.263 242.483 169.798 0. 0. 0.
6000 38.839 271.913 242.968 173.667 0. 0. 0.
 
PREVIOUS: December 1973 (1 atm) CURRENT: December 1973 (1 bar)
 
Niobium (Nb) Nb1(g)

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