Potassium Tetrafluoroborate (KBF4) B1F4K1(l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 250 298.15 167.117 150.129 150.129 0. -1869.415 -1772.232 310.488 300 167.117 151.163 150.133 0.309 -1869.298 -1771.630 308.468 400 167.117 199.240 156.688 17.021 -1865.865 -1739.527 227.159 500 167.117 236.531 169.066 33.733 -1860.724 -1708.547 178.491 600 167.117 267.000 182.926 50.444 -1855.979 -1678.563 146.132 700 167.117 292.761 196.824 67.156 -1851.522 -1649.350 123.076 800 167.117 315.077 210.242 83.868 -1847.289 -1620.759 105.825 843.000 167.117 323.826 215.814 91.054 II <--> LIQUID 900 167.117 334.760 223.005 100.580 1843.250 1592.688 92.437 1000 167.117 352.368 235.077 117.291 -1839.393 -1565.056 81.750 1100 167.117 368.296 246.475 134.003 -1914.670 -1533.192 72.805 1200 167.117 382.837 257.241 150.715 -1910.118 -1498.713 65.237 1300 167.117 396.213 267.424 167.426 -1905.665 -1464.611 58.849 1400 167.117 408.598 277.071 184.138 -1901.303 -1430.848 53.386 1500 167.117 420.128 286.228 200.850 -1897.026 -1397.394 48.662