Sodium Sulfate, III (Na2SO4) Na2O4S1(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -23.527 -1373.708 -1373.708 INFINITE 100 68.216 47.861 252.668 -20.481 -1379.841 -1343.950 702.008 200 105.621 108.169 165.992 -11.565 -1383.300 -1306.534 341.232 298.15 129.168 154.908 154.908 0. -1384.854 -1268.471 222.231 300 129.570 155.709 154.911 0.239 -1384.870 -1267.748 220.735 400 150.143 195.743 160.231 14.205 -1392.687 -1228.129 160.377 500 173.167 231.587 170.966 30.311 -1392.829 -1186.938 123.999 600 200.091 265.539 183.916 48.973 -1390.103 -1145.967 99.765 700 227.011 298.405 197.935 70.329 -1384.508 -1105.681 82.507 800 253.935 330.475 212.505 94.376 -1376.164 -1066.386 69.628 900 280.859 361.939 227.366 121.116 -1418.266 -1027.217 59.618 1000 307.779 392.924 242.376 150.548 -1403.389 -984.542 51.427