Boric Acid (HBO2) B1H1O2(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 54.392 48.953 48.953 0. -802.784 -486.201 85.180 300 54.810 49.291 48.954 0.101 -803.137 -484.236 84.313 400 61.505 66.015 51.189 5.931 -822.007 -375.080 48.980 500 66.526 80.279 55.615 12.332 -840.448 -261.206 27.288 600 71.546 92.835 60.791 19.227 -858.451 -143.659 12.507 700 78.921 104.435 66.205 26.761 -875.889 -23.139 1.727 800 84.935 115.381 71.675 34.965 -892.782 99.840 -6.519 900 89.642 125.671 77.109 43.706 -909.325 224.915 -13.054 1000 92.885 135.297 82.452 52.845 -925.719 351.820 -18.377 1100 94.056 144.207 87.666 62.194 -942.200 480.371 -22.811 1200 94.977 152.432 92.725 71.648 -958.913 610.431 -26.571 1300 95.646 160.062 97.615 81.181 -975.905 741.897 -29.810 1400 96.065 167.167 102.332 90.769 -993.213 874.682 -32.635 1500 96.232 173.802 106.878 100.386 -1010.864 1008.717 -35.127