Iron Iodide (FeI2) Fe1I2(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 83.680 167.360 167.360 0. -104.600 -111.725 19.574 300 83.680 167.878 167.362 0.155 -104.592 -111.769 19.461 400 83.931 191.985 170.647 8.535 -120.478 -113.639 14.840 500 84.182 210.741 176.859 16.941 -163.121 -107.843 11.266 600 84.425 226.111 183.825 25.371 -161.531 -96.941 8.439 650.000 84.546 232.873 187.341 29.596 I <--> II 650.000 87.864 234.160 187.341 30.432 TRANSITION 700 95.395 240.947 190.927 35.013 -158.983 -86.362 6.444 800 110.876 254.699 198.037 45.330 -156.060 -76.173 4.974 860.000 120.005 263.045 202.281 52.257 II <--> LIQUID 900 126.224 268.644 205.106 57.184 152.024 66.419 3.855 1000 136.817 282.555 212.158 70.397 -147.361 -57.157 2.986 1100 141.188 295.834 219.168 84.333 -142.883 -48.336 2.295 1200 142.256 308.176 226.078 98.517 -137.621 -39.991 1.741 1300 142.256 319.562 232.837 112.743 -130.695 -32.137 1.291 1400 142.256 330.105 239.413 126.969 -123.883 -24.812 0.926 1500 142.256 339.919 245.790 141.194 -117.196 -17.970 0.626