Iodine Fluoride (IF5) F5I1(g) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -20.049 -831.702 -831.702 INFINITE 100 52.519 250.536 412.327 -16.179 -836.625 -816.036 426.254 200 83.943 297.260 343.540 -9.256 -839.491 -794.121 207.403 250 94.929 317.229 336.315 -4.771 -840.076 -782.702 163.537 298.15 102.878 334.663 334.663 0. -840.315 -771.626 135.186 300 103.139 335.300 334.664 0.191 -840.319 -771.200 134.278 350 109.222 351.679 335.944 5.507 -840.381 -759.674 113.375 400 113.756 366.574 338.856 11.087 -848.290 -747.874 97.662 450 117.181 380.179 342.703 16.864 -848.697 -735.297 85.351 500 119.808 392.667 347.084 22.792 -869.098 -720.779 75.299 600 123.478 414.861 356.577 34.970 -867.480 -691.265 60.180 700 125.838 434.085 366.308 47.444 -865.769 -662.030 49.401 800 127.434 450.999 375.858 60.113 -864.013 -633.044 41.334 900 128.559 466.078 385.060 72.916 -862.241 -604.279 35.071 1000 129.379 479.667 393.853 85.815 -860.468 -575.712 30.072 1100 129.994 492.029 402.224 98.785 -858.705 -547.322 25.990 1200 130.468 503.361 410.187 111.809 -856.962 -519.091 22.595 1300 130.839 513.819 417.761 124.875 -855.247 -491.005 19.729 1400 131.135 523.526 424.974 137.974 -853.568 -463.050 17.277 1500 131.376 532.582 431.849 151.100 -851.932 -435.213 15.155 1600 131.573 541.068 438.413 164.248 -850.345 -407.484 13.303 1700 131.738 549.049 444.688 177.414 -848.810 -379.852 11.671 1800 131.876 556.583 450.697 190.594 -847.329 -352.309 10.224 1900 131.993 563.717 456.460 203.788 -845.901 -324.848 8.931 2000 132.093 570.490 461.993 216.993 -844.519 -297.460 7.769 2100 132.180 576.937 467.315 230.206 -843.177 -270.140 6.719 2200 132.255 583.087 472.438 243.428 -841.864 -242.884 5.767 2300 132.320 588.968 477.378 256.657 -840.569 -215.686 4.898 2400 132.378 594.601 482.146 269.892 -839.277 -188.545 4.104 2500 132.429 600.006 486.753 283.132 -837.975 -161.458 3.373 2600 132.474 605.200 491.209 296.378 -836.649 -134.423 2.701 2700 132.514 610.201 495.524 309.627 -835.284 -107.440 2.079 2800 132.550 615.021 499.706 322.880 -833.867 -80.509 1.502 2900 132.583 619.673 503.763 336.137 -832.387 -53.629 0.966 3000 132.612 624.168 507.702 349.397 -830.832 -26.802 0.467 3100 132.638 628.517 511.530 362.659 -829.193 -0.028 0. 3200 132.662 632.728 515.252 375.924 -827.461 26.692 -0.436 3300 132.684 636.811 518.874 389.192 -825.629 53.357 -0.845 3400 132.704 640.772 522.401 402.461 -823.693 79.964 -1.228 3500 132.723 644.619 525.838 415.732 -821.647 106.512 -1.590 3600 132.740 648.358 529.190 429.006 -819.489 133.001 -1.930 3700 132.755 651.995 532.460 442.280 -817.216 159.428 -2.251 3800 132.769 655.536 535.653 455.557 -814.827 185.792 -2.554 3900 132.782 658.985 538.771 468.834 -812.322 212.092 -2.841 4000 132.795 662.347 541.818 482.113 -809.700 238.326 -3.112 4100 132.806 665.626 544.798 495.393 -806.963 264.492 -3.370 4200 132.817 668.826 547.713 508.674 -804.111 290.592 -3.614 4300 132.826 671.952 550.567 521.956 -801.146 316.621 -3.846 4400 132.836 675.005 553.360 535.239 -798.071 342.580 -4.067 4500 132.844 677.991 556.097 548.523 -794.887 368.469 -4.277 4600 132.852 680.911 558.778 561.808 -791.596 394.285 -4.477 4700 132.860 683.768 561.407 575.094 -788.202 420.029 -4.668 4800 132.867 686.565 563.986 588.380 -784.707 445.699 -4.850 4900 132.873 689.305 566.515 601.667 -781.114 471.295 -5.024 5000 132.879 691.989 568.998 614.955 -777.425 496.817 -5.190 5100 132.885 694.621 571.436 628.243 -773.644 522.265 -5.349 5200 132.891 697.201 573.830 641.532 -769.772 547.638 -5.501 5300 132.896 699.732 576.181 654.821 -765.814 572.935 -5.647 5400 132.901 702.217 578.492 668.111 -761.771 598.156 -5.786 5500 132.906 704.655 580.764 681.401 -757.647 623.301 -5.920 5600 132.910 707.050 582.998 694.692 -753.444 648.373 -6.048 5700 132.914 709.403 585.195 707.983 -749.164 673.366 -6.171 5800 132.918 711.714 587.356 721.275 -744.811 698.285 -6.289 5900 132.922 713.986 589.483 734.567 -740.386 723.129 -6.402 6000 132.926 716.220 591.577 747.859 -735.893 747.896 -6.511