Potassium Superoxide (KO2) K1O2(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -16.734 -285.480 -285.480 INFINITE 100 52.400 46.225 188.849 -14.262 -287.646 -271.377 141.753 200 69.454 92.567 129.436 -7.374 -286.263 -255.381 66.699 298.15 77.530 122.499 122.499 0. -284.512 -240.589 42.150 300 77.613 122.979 122.500 0.144 -284.478 -240.316 41.843 400 83.889 146.226 125.627 8.240 -284.831 -225.443 29.440 500 87.655 165.373 131.719 16.827 -282.410 -210.868 22.029 600 90.165 181.588 138.714 25.724 -279.712 -196.810 17.134 700 91.922 195.625 145.864 34.833 -276.854 -183.217 13.672 800 93.220 207.987 152.872 44.092 -273.908 -170.041 11.103 900 94.224 219.028 159.620 53.467 -270.921 -157.237 9.126 1000 94.893 228.992 166.067 62.924 -267.939 -144.765 7.562 1100 95.395 238.061 172.206 72.440 -343.951 -127.980 6.077 1200 95.730 246.376 178.045 81.997 -340.021 -108.520 4.724 1300 95.981 254.049 183.600 91.583 -336.097 -89.388 3.592 1400 96.148 261.169 188.890 101.191 -332.182 -70.557 2.633 1500 96.232 267.806 193.932 110.810 -328.284 -52.006 1.811