Sodium Silicate (Na2SiO3) Na2O3Si1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 111.880 150.496 150.496 0. -1510.875 -1427.704 250.128 300 112.395 151.189 150.498 0.207 -1510.890 -1427.188 248.496 400 127.779 185.767 155.108 12.264 -1516.655 -1398.786 182.663 500 138.716 215.514 164.284 25.615 -1516.373 -1369.330 143.053 600 147.114 241.575 175.039 39.922 -1515.214 -1340.018 116.659 700 153.946 264.782 186.232 54.985 -1513.385 -1310.955 97.825 800 159.749 285.727 197.381 70.677 -1511.025 -1282.192 83.719 900 164.842 304.843 208.274 86.912 -1508.235 -1253.751 72.766 900.000 164.842 304.843 208.274 86.912 GLASS <--> LIQUID 900.000 177.318 304.843 208.274 86.912 TRANSITION 1000 177.318 323.525 218.882 104.644 -1504.081 -1225.699 64.024 1100 177.318 340.425 229.175 122.375 -1500.086 -1198.055 56.891 1200 177.318 355.854 239.098 140.107 -1689.797 -1165.888 50.750 1300 177.318 370.047 248.632 157.839 -1684.338 -1122.451 45.101 1362.000 177.318 378.308 254.349 168.833 CRYSTAL <--> LIQUID 1400 177.318 383.188 257.780 175.571 1678.966 1079.431 40.274 1500 177.318 395.421 266.553 193.303 -1673.677 -1036.792 36.104 1600 177.318 406.865 274.969 211.034 -1668.470 -994.504 32.467 1700 177.318 417.615 283.047 228.766 -1713.518 -952.091 29.254 1800 177.318 427.750 290.807 246.498 -1708.238 -907.454 26.334 1900 177.318 437.337 298.269 264.230 -1702.994 -863.110 23.729 2000 177.318 446.433 305.452 281.962 -1697.785 -819.040 21.391 2100 177.318 455.084 312.373 299.693 -1692.613 -775.230 19.283 2200 177.318 463.333 319.049 317.425 -1687.478 -731.665 17.372 2300 177.318 471.215 325.495 335.157 -1682.381 -688.333 15.633 2400 177.318 478.762 331.725 352.889 -1677.322 -645.223 14.043 2500 177.318 486.000 337.752 370.621 -1672.303 -602.322 12.585