Sodium Oxide (Na2O) Na2O1(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -12.399 -413.146 -413.146 INFINITE 100 32.752 16.649 128.981 -11.233 -416.111 -404.348 211.210 200 59.551 49.209 81.114 -6.381 -417.626 -391.841 102.338 298.15 69.103 75.042 75.042 0. -417.982 -379.090 66.415 300 69.245 75.470 75.043 0.128 -417.985 -378.849 65.964 400 75.776 96.304 77.840 7.386 -423.456 -365.363 47.712 500 81.496 113.855 83.332 15.262 -423.312 -350.842 36.652 600 85.709 129.103 89.717 23.631 -422.555 -336.410 29.287 700 88.851 142.560 96.324 32.365 -421.353 -322.142 24.039 800 91.291 154.589 102.869 41.376 -419.828 -308.070 20.115 900 93.266 165.458 109.229 50.607 -418.075 -294.204 17.075 1000 94.918 175.373 115.355 60.018 -416.169 -280.541 14.654 1023.150 95.264 177.549 116.737 62.219 GAMMA <--> BETA 1023.150 95.265 179.266 116.737 63.977 TRANSITION 1100 96.353 186.205 121.351 71.340 -412.418 -267.206 12.689 1200 97.629 194.645 127.111 81.040 -603.913 -249.215 10.848 1243.150 98.140 198.103 129.516 85.264 BETA <--> ALPHA 1243.150 98.142 207.695 129.516 97.188 TRANSITION 1300 98.788 212.098 133.031 102.786 -588.116 -220.358 8.854 1400 99.860 219.459 138.945 112.719 -584.147 -192.218 7.172 1405.200 99.913 219.829 139.243 113.239 ALPHA <--> LIQUID 1500 100.868 226.383 144.545 122.756 580.088 164.364 5.724 1600 101.822 232.923 149.866 132.891 -575.944 -136.784 4.466 1700 102.734 239.124 154.936 143.119 -571.720 -109.465 3.363 1800 103.617 245.021 159.778 153.437 -567.418 -82.398 2.391 1900 104.470 250.646 164.414 163.841 -563.042 -55.571 1.528 2000 105.307 256.026 168.861 174.330 -558.594 -28.977 0.757