Potassium Silicate (K2SiO3) K2O3Si1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 118.407 184.256 184.256 0. -1499.291 -1418.306 248.481 300 118.758 184.990 184.259 0.219 -1499.299 -1417.803 246.861 400 135.562 221.557 189.130 12.971 -1504.082 -1389.709 181.477 500 148.114 253.210 198.852 27.179 -1502.956 -1361.222 142.206 600 157.737 281.103 210.282 42.492 -1500.837 -1333.061 116.053 700 164.850 305.985 222.209 58.643 -1498.008 -1305.314 97.404 700.000 164.850 305.985 222.209 58.643 GLASS <--> LIQUID 700.000 179.912 305.985 222.209 58.643 TRANSITION 800 179.912 330.008 234.216 76.634 -1493.485 -1278.097 83.451 900 179.912 351.199 246.060 94.625 -1489.129 -1251.437 72.632 1000 179.912 370.155 257.538 112.616 -1484.968 -1225.251 64.001 1100 179.912 387.302 268.568 130.607 -1638.934 -1190.252 56.520 1200 179.912 402.956 279.124 148.599 -1633.122 -1149.720 50.046 1249.000 179.912 410.154 284.121 157.414 CRYSTAL <--> LIQUID 1300 179.912 417.357 289.211 166.590 1627.403 1109.670 44.587 1400 179.912 430.690 298.846 184.581 -1621.773 -1070.056 39.924 1500 179.912 443.103 308.055 202.572 -1616.227 -1030.842 35.897 1600 179.912 454.714 316.862 220.563 -1610.764 -991.994 32.385 1700 179.912 465.621 325.295 238.555 -1655.560 -953.040 29.283 1800 179.912 475.905 333.379 256.546 -1650.032 -911.875 26.462 1900 179.912 485.632 341.139 274.537 -1644.548 -871.016 23.946 2000 179.912 494.860 348.596 292.528 -1639.109 -830.445 21.689 2100 179.912 503.638 355.772 310.519 -1633.718 -790.144 19.654 2200 179.912 512.008 362.685 328.511 -1628.380 -750.098 17.810 2300 179.912 520.005 369.352 346.502 -1623.098 -710.296 16.131 2400 179.912 527.662 375.790 364.493 -1617.876 -670.721 14.598 2500 179.912 535.006 382.013 382.484 -1612.720 -631.363 13.192 2600 179.912 542.063 388.034 400.475 -1607.634 -592.209 11.898 2700 179.912 548.853 393.865 418.467 -1602.623 -553.249 10.703 2800 179.912 555.396 399.518 436.458 -1597.692 -514.474 9.598 2900 179.912 561.709 405.002 454.449 -1592.847 -475.874 8.571 3000 179.912 567.808 410.328 472.440 -1588.095 -437.438 7.616