Sodium Fluoride (NaF) F1Na1(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 46.852 73.464 73.464 0.000 -546.204 -522.536 91.546 300 46.924 73.754 73.465 0.087 -546.199 -522.389 90.956 400 49.597 87.661 75.343 4.927 -548.589 -514.287 67.159 500 51.262 98.915 78.968 9.974 -548.327 -505.738 52.834 600 52.677 108.387 83.102 15.171 -547.883 -497.259 43.290 700 54.124 116.615 87.314 20.510 -547.271 -488.868 36.480 800 55.710 123.944 91.443 26.001 -546.495 -480.575 31.378 900 57.492 130.606 95.430 31.659 -545.551 -472.390 27.417 900.000 57.492 130.606 95.430 31.659 GLASS <--> LIQUID 900.000 76.525 130.606 95.430 31.659 TRANSITION 1000 74.099 138.538 99.353 39.185 -542.757 -464.413 24.258 1100 72.300 145.512 103.239 46.501 -540.209 -456.704 21.687 1200 70.961 151.744 107.026 53.662 -634.632 -446.778 19.448 1269.000 70.208 155.689 109.566 58.531 CRYSTAL <--> LIQUID 1300 69.873 157.380 110.686 60.702 631.555 431.249 17.328 1400 69.036 162.526 114.207 67.646 -628.585 -415.953 15.519 1500 68.367 167.266 117.589 74.515 -625.699 -400.866 13.959 1600 67.823 171.660 120.833 81.324 -622.884 -385.969 12.601 1700 67.362 175.758 123.944 88.083 -620.127 -371.247 11.407 1800 66.986 179.597 126.931 94.800 -617.419 -356.685 10.351 1900 66.651 183.210 129.798 101.481 -614.752 -342.273 9.410 2000 66.358 186.621 132.555 108.131 -612.123 -328.000 8.566 2100 66.107 189.852 135.207 114.754 -609.525 -313.858 7.807 2200 65.898 192.923 137.761 121.354 -606.952 -299.839 7.119 2300 65.731 195.848 140.224 127.936 -604.399 -285.936 6.494 2400 65.563 198.642 142.600 134.500 -601.863 -272.144 5.923 2500 65.438 201.316 144.896 141.050 -599.341 -258.458 5.400 2600 65.312 203.880 147.115 147.588 -596.829 -244.872 4.920 2700 65.187 206.342 149.264 154.112 -594.328 -231.383 4.476 2800 65.103 208.711 151.345 160.627 -591.834 -217.986 4.067 2900 65.019 210.995 153.363 167.133 -589.345 -204.679 3.687 3000 64.936 213.197 155.321 173.631 -586.862 -191.457 3.334 3100 64.852 215.325 157.222 180.120 -584.385 -178.317 3.005 3200 64.810 217.384 159.070 186.603 -581.911 -165.258 2.698 3300 64.726 219.376 160.868 193.080 -579.442 -152.276 2.410 3400 64.685 221.308 162.617 199.550 -576.980 -139.368 2.141 3500 64.643 223.183 164.321 206.016 -574.523 -126.533 1.888