Phosphorus Fluoride (PF2) F2P1(g) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -11.209 -485.280 -485.280 INFINITE 100 34.623 220.645 299.211 -7.857 -485.722 -488.981 255.417 200 39.685 246.149 266.890 -4.148 -487.206 -491.880 128.466 250 42.344 255.291 263.680 -2.097 -487.749 -492.985 103.004 298.15 44.717 262.957 262.957 0. -488.256 -493.948 86.538 300 44.803 263.233 262.957 0.083 -488.275 -493.983 86.010 350 46.927 270.304 263.511 2.378 -489.505 -494.823 73.848 400 48.696 276.690 264.766 4.770 -490.060 -495.544 64.711 450 50.142 282.511 266.419 7.242 -490.571 -496.198 57.597 500 51.319 287.858 268.299 9.779 -491.048 -496.797 51.900 600 53.065 297.379 272.372 15.004 -491.929 -497.863 43.343 700 54.253 305.654 276.548 20.374 -492.744 -498.787 37.220 800 55.086 312.956 280.652 25.843 -493.517 -499.597 32.620 900 55.687 319.481 284.610 31.383 -494.263 -500.312 29.037 1000 56.134 325.372 288.397 36.976 -494.994 -500.945 26.167 1100 56.473 330.739 292.006 42.607 -495.715 -501.505 23.814 1200 56.736 335.664 295.441 48.268 -560.005 -500.921 21.805 1300 56.944 340.214 298.713 53.952 -559.947 -496.000 19.930 1400 57.111 344.441 301.830 59.655 -559.898 -491.083 18.323 1500 57.248 348.386 304.804 65.373 -559.857 -486.169 16.930 1600 57.360 352.084 307.644 71.104 -559.825 -481.258 15.711 1700 57.454 355.564 310.362 76.845 -559.803 -476.348 14.636 1800 57.533 358.851 312.965 82.594 -559.790 -471.439 13.681 1900 57.600 361.963 315.463 88.351 -559.784 -466.531 12.826 2000 57.658 364.919 317.862 94.114 -559.783 -461.623 12.056 2100 57.707 367.733 320.171 99.882 -559.786 -456.715 11.360 2200 57.751 370.419 322.394 105.655 -559.787 -451.807 10.727 2300 57.789 372.987 324.538 111.432 -559.786 -446.899 10.149 2400 57.822 375.447 326.609 117.213 -559.778 -441.991 9.620 2500 57.852 377.808 328.610 122.996 -559.760 -437.083 9.132 2600 57.879 380.078 330.546 128.783 -559.728 -432.177 8.683 2700 57.904 382.263 332.421 134.572 -559.679 -427.272 8.266 2800 57.926 384.369 334.239 140.364 -559.611 -422.369 7.879 2900 57.948 386.402 336.003 146.157 -559.520 -417.469 7.519 3000 57.968 388.367 337.716 151.953 -559.405 -412.573 7.184 3100 57.987 390.268 339.381 157.751 -559.262 -407.681 6.869 3200 58.007 392.109 341.000 163.551 -559.089 -402.794 6.575 3300 58.027 393.895 342.576 169.352 -558.886 -397.913 6.298 3400 58.047 395.627 344.111 175.156 -558.651 -393.038 6.038 3500 58.068 397.310 345.607 180.962 -558.383 -388.171 5.793 3600 58.091 398.946 347.066 186.770 -558.080 -383.312 5.562 3700 58.115 400.538 348.490 192.580 -557.743 -378.462 5.343 3800 58.142 402.088 349.880 198.393 -557.370 -373.621 5.136 3900 58.171 403.599 351.238 204.208 -556.962 -368.791 4.939 4000 58.202 405.072 352.565 210.027 -556.518 -363.972 4.753 4100 58.237 406.510 353.864 215.849 -556.037 -359.164 4.576 4200 58.275 407.914 355.134 221.675 -555.521 -354.368 4.407 4300 58.316 409.285 356.377 227.504 -554.969 -349.586 4.247 4400 58.361 410.626 357.595 233.338 -554.381 -344.816 4.093 4500 58.410 411.938 358.788 239.176 -553.757 -340.060 3.947 4600 58.462 413.223 359.958 245.020 -553.098 -335.318 3.808 4700 58.519 414.481 361.104 250.869 -552.404 -330.591 3.674 4800 58.580 415.713 362.229 256.724 -551.675 -325.879 3.546 4900 58.646 416.922 363.333 262.585 -550.911 -321.183 3.424 5000 58.716 418.107 364.417 268.453 -550.114 -316.503 3.306 5100 58.790 419.271 365.481 274.329 -549.282 -311.839 3.194 5200 58.869 420.413 366.526 280.211 -548.417 -307.191 3.086 5300 58.952 421.535 367.554 286.102 -547.519 -302.561 2.982 5400 59.039 422.638 368.564 292.002 -546.588 -297.948 2.882 5500 59.131 423.722 369.557 297.910 -545.624 -293.353 2.786 5600 59.226 424.789 370.534 303.828 -544.628 -288.774 2.694 5700 59.326 425.838 371.495 309.756 -543.600 -284.215 2.605 5800 59.430 426.870 372.440 315.694 -542.540 -279.674 2.519 5900 59.537 427.887 373.372 321.642 -541.449 -275.150 2.436 6000 59.649 428.889 374.289 327.601 -540.327 -270.647 2.356