Potassium Oxide (K2O) K2O1(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 83.680 94.140 94.140 0. -363.171 -322.094 56.429 300 83.889 94.658 94.142 0.155 -363.153 -321.839 56.037 400 91.546 119.958 97.539 8.968 -366.782 -307.331 40.133 500 94.266 140.671 104.161 18.255 -365.240 -292.638 30.572 600 97.404 158.126 111.736 27.834 -363.320 -278.292 24.227 700 101.384 173.439 119.478 37.773 -361.000 -264.299 19.722 800 105.395 187.239 127.099 48.111 -358.283 -250.665 16.367 900 109.455 199.887 134.494 58.854 -355.209 -237.394 13.778 1000 113.512 211.629 141.627 70.002 -351.817 -224.482 11.726 1100 117.549 222.637 148.496 81.555 -506.056 -202.704 9.626 1200 121.592 233.038 155.112 93.512 -500.031 -175.390 7.635 1300 125.642 242.931 161.489 105.874 -493.618 -148.594 5.971 1400 129.699 252.390 167.647 118.641 -486.816 -122.306 4.563 1500 133.762 261.477 173.601 131.814 -479.623 -96.519 3.361 1600 137.833 270.240 179.369 145.394 -472.038 -71.223 2.325 1700 141.910 278.718 184.965 159.381 -464.062 -46.415 1.426 1800 145.993 286.945 190.403 173.776 -455.695 -22.087 0.641 1900 150.083 294.948 195.696 188.580 -446.939 1.766 -0.049 2000 154.180 302.751 200.854 203.793 -437.796 25.147 -0.657