Potassium Borate (K2B8O13) B8K2O13(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 250 298.15 321.289 293.717 293.717 0. -5945.129 -5582.653 978.058 300 322.042 295.707 293.723 0.595 -5945.165 -5580.404 971.635 400 360.493 393.657 306.819 34.735 -5952.194 -5457.589 712.688 500 397.313 478.036 332.801 72.617 -5954.258 -5333.683 557.206 600 435.136 553.841 363.420 114.252 -5955.089 -5209.463 453.524 700 471.453 623.739 395.677 159.643 -5954.085 -5085.245 379.466 800 500.406 688.630 428.291 208.272 -5951.363 -4961.293 323.939 900 525.092 749.032 460.612 259.578 -5947.212 -4837.770 280.777 1000 546.012 805.494 492.308 313.186 -5941.830 -4714.777 246.275 1100 560.656 858.271 523.206 368.571 -6093.530 -4583.146 217.635 1130.000 563.825 873.400 532.303 385.440 CRYSTAL <--> LIQUID 1200 574.045 907.597 553.205 425.270 6084.767 4446.220 193.539 1300 586.178 954.032 582.269 483.292 -6075.326 -4310.053 173.180 1400 597.057 997.879 610.404 542.464 -6065.317 -4174.635 155.758 1500 606.680 1039.407 637.632 602.662 -6054.821 -4039.951 140.684 1600 615.048 1078.835 663.986 663.758 -6043.933 -3905.979 127.517 1700 622.161 1116.342 689.501 725.629 -6032.754 -3772.698 115.921 1800 628.018 1152.075 714.215 788.149 -6021.394 -3640.083 105.632 1900 632.621 1186.159 738.164 851.191 -6009.968 -3508.098 96.444 2000 635.968 1218.699 761.383 914.631 -5998.593 -3376.715 88.191