Potassium Sulfate (K2SO4) K2O4S1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 131.319 211.505 211.505 0. -1393.668 -1286.278 225.351 300 131.666 212.319 211.508 0.243 -1393.685 -1285.612 223.845 400 147.649 252.455 216.872 14.233 -1401.191 -1248.498 163.037 500 160.733 286.831 227.505 29.663 -1402.022 -1210.215 126.430 600 172.527 317.148 239.966 46.309 -1401.359 -1171.892 102.022 700 186.368 344.790 252.992 64.259 -1399.257 -1133.794 84.605 800 199.619 370.547 266.094 83.563 -1395.792 -1096.092 71.567 800.000 199.619 370.547 266.094 83.563 GLASS <--> LIQUID 800.000 201.460 370.547 266.094 83.563 TRANSITION 900 201.460 394.276 279.044 103.709 -1444.679 -1057.804 61.393 1000 201.460 415.502 291.647 123.855 -1439.338 -1015.106 53.024 1100 201.460 434.703 303.793 144.001 -1592.120 -963.712 45.763 1200 201.460 452.232 315.443 164.147 -1585.116 -906.894 39.476 1300 201.460 468.358 326.594 184.293 -1578.196 -850.657 34.180 1342.000 201.460 474.763 331.132 192.754 BETA <--> LIQUID 1400 201.460 483.287 337.260 204.439 1571.353 794.950 29.660 1500 201.460 497.187 347.464 224.585 -1564.582 -739.730 25.760 1600 201.460 510.189 357.232 244.731 -1557.880 -684.958 22.362 1700 201.460 522.402 366.592 264.877 -1551.245 -630.604 19.376 1800 201.460 533.917 375.571 285.022 -1544.678 -576.639 16.734 1900 201.460 544.809 384.195 305.168 -1538.178 -523.036 14.379 2000 201.460 555.143 392.486 325.314 -1531.747 -469.774 12.269 2100 201.460 564.972 400.467 345.460 -1525.387 -416.833 10.368 2200 201.460 574.344 408.159 365.606 -1519.101 -364.191 8.647 2300 201.460 583.299 415.581 385.752 -1512.892 -311.835 7.082 2400 201.460 591.873 422.749 405.898 -1506.763 -259.747 5.653 2500 201.460 600.097 429.680 426.044 -1500.719 -207.913 4.344 2600 201.460 607.999 436.387 446.190 -1494.762 -156.318 3.140 2700 201.460 615.602 442.885 466.336 -1488.898 -104.951 2.030 2800 201.460 622.929 449.185 486.482 -1483.129 -53.799 1.004 2900 201.460 629.998 455.299 506.628 -1477.463 -2.853 0.051 3000 201.460 636.828 461.237 526.774 -1471.903 47.901 -0.834