Nickel Sulfide (NiS2) Ni1S2(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 250 298.15 70.626 71.965 71.965 0. -131.378 -124.813 21.867 300 70.664 72.402 71.966 0.131 -131.379 -124.772 21.725 400 72.739 93.015 74.763 7.301 -136.131 -122.358 15.978 500 74.814 109.469 80.112 14.678 -139.577 -118.542 12.384 600 76.889 123.292 86.186 22.264 -142.439 -114.057 9.930 700 78.965 135.301 92.363 30.056 -144.663 -109.134 8.144 800 81.040 145.981 98.410 38.057 -146.172 -103.951 6.787 900 83.115 155.646 104.241 46.264 -253.607 -96.438 5.597 1000 85.190 164.510 109.830 54.680 -252.093 -79.055 4.129 1100 87.266 172.727 115.179 63.302 -250.470 -61.829 2.936 1200 89.341 180.409 120.298 72.133 -248.744 -44.755 1.948 1280.000 91.001 186.228 124.238 79.346 CRYSTAL <--> LIQUID 1300 91.416 187.642 125.203 81.171 246.921 27.829 1.118 1400 93.491 194.493 129.910 90.416 -245.007 -11.047 0.412 1500 95.567 201.014 134.434 99.869 -243.006 5.595 -0.195 1600 97.642 207.248 138.792 109.529 -240.921 22.101 -0.722 1700 99.717 213.229 142.996 119.397 -238.758 38.474 -1.182 1800 101.793 218.988 147.058 129.473 -253.667 55.432 -1.609