Lead Iodide (PbI2) I2Pb1(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -19.501 -174.817 -174.817 INFINITE 100 69.789 93.717 242.109 -14.839 -174.972 -174.562 91.182 200 75.396 144.332 181.860 -7.506 -175.096 -174.116 45.474 298.15 77.573 174.836 174.836 0. -175.393 -173.577 30.410 300 77.613 175.316 174.838 0.144 -175.400 -173.566 30.221 400 78.856 197.846 177.901 7.978 -191.933 -172.328 22.504 500 80.391 215.574 183.723 15.925 -234.996 -163.287 17.059 600 83.713 230.498 190.305 24.116 -233.448 -149.087 12.979 683.000 87.780 241.591 195.872 31.226 CRYSTAL <--> LIQUID 683.000 108.575 275.896 195.872 54.656 TRANSITION 700 108.575 278.565 197.848 56.502 -212.652 -134.959 10.071 800 108.575 293.064 208.864 67.359 -208.591 -124.137 8.105 900 108.575 305.852 218.944 78.217 -204.509 -113.825 6.606 1000 108.575 317.291 228.217 89.074 -200.408 -103.969 5.431 1100 108.575 327.640 236.792 99.932 -196.290 -94.524 4.489 1200 108.575 337.087 244.762 110.789 -192.159 -85.455 3.720 1300 108.575 345.778 252.203 121.647 -188.028 -76.730 3.083 1400 108.575 353.824 259.178 132.504 -183.920 -68.323 2.549 1500 108.575 361.315 265.740 143.362 -179.855 -60.208 2.097