Niobium Oxide (NbO2) Nb1O2(cr)
 
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 -9.271 -790.308 -790.308 INFINITE
100 21.143 11.275 96.297 -8.502 -793.224 -775.765 405.218
200 44.918 33.967 59.417 -5.090 -794.821 -757.542 197.850
 
298.15 57.452 54.506 54.506 0. -794.960 -739.175 129.500
 
300 57.605 54.862 54.507 0.106 -794.954 -738.829 128.642
400 63.547 72.327 56.848 6.191 -794.348 -720.199 94.048
500 67.739 86.967 61.447 12.760 -793.403 -701.766 73.313
 
600 71.651 99.665 66.781 19.730 -792.205 -683.547 59.508
700 75.555 111.003 72.302 27.090 -790.755 -665.549 49.664
800 79.496 121.348 77.795 34.843 -789.037 -647.776 42.295
900 83.479 130.941 83.173 42.991 -787.033 -630.236 36.578
1000 87.500 139.945 88.405 51.540 -784.726 -612.934 32.016
 
 
1090.000 91.144 147.640 92.980 59.579 I <--> II
1090.000 92.885 150.780 92.980 63.001 TRANSITION
 
1100 92.885 151.628 93.510 63.930 -778.665 -595.911 28.297
1200 92.885 159.710 98.694 73.219 -775.786 -579.425 25.222
 
1200.000 92.885 159.710 98.694 73.219 II <--> III
1200.000 83.052 159.710 98.694 73.219 TRANSITION
 
1300 83.052 166.358 103.647 81.524 -773.962 -563.136 22.627
1400 83.052 172.513 108.349 89.829 -772.208 -546.984 20.408
1500 83.052 178.243 112.820 98.135 -770.526 -530.956 18.490
 
1600 83.052 183.603 117.078 106.440 -768.921 -515.038 16.814
1700 83.052 188.638 121.141 114.745 -767.398 -499.217 15.339
1800 83.052 193.385 125.024 123.050 -765.965 -483.484 14.030
1900 83.052 197.875 128.741 131.355 -764.626 -467.827 12.861
2000 83.052 202.135 132.305 139.661 -763.386 -452.239 11.811
 
2100 83.052 206.188 135.728 147.966 -762.251 -436.710 10.863
 
2175.000 83.052 209.102 138.208 154.195 III <--> LIQUID
 
2200 83.052 210.051 139.019 156.271 761.226 421.232 10.001
2300 83.052 213.743 142.188 164.576 -760.320 -405.799 9.216
2400 83.052 217.278 145.244 172.882 -759.541 -390.402 8.497
2500 83.052 220.668 148.193 181.187 -758.906 -375.035 7.836
 
2600 83.052 223.925 151.044 189.492 -758.437 -359.690 7.226
2700 83.052 227.060 153.802 197.797 -758.172 -344.359 6.662
2800 83.052 230.080 156.472 206.103 -784.523 -328.549 6.129
PREVIOUS: CURRENT: December 1973
 
Niobium Oxide (NbO2) Nb1O2(cr)

Download table in tab-delimited text format.