Rubidium, Ion (Rb+) Rb1+(g) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -6.197 485.224 100 20.786 141.623 182.810 -4.119 200 20.786 156.031 166.231 -2.040 250 20.786 160.669 164.672 -1.001 298.15 20.786 164.330 164.330 0. 490.129 457.771 -80.200 300 20.786 164.459 164.330 0.038 490.148 457.570 -79.670 350 20.786 167.663 164.583 1.078 488.429 452.364 -67.512 400 20.786 170.438 165.146 2.117 488.914 447.179 -58.396 450 20.786 172.887 165.872 3.156 489.414 441.933 -51.298 500 20.786 175.077 166.685 4.196 489.927 436.630 -45.614 600 20.786 178.866 168.409 6.274 490.983 425.871 -37.075 700 20.786 182.071 170.138 8.353 492.066 414.934 -30.963 800 20.786 184.846 171.807 10.431 493.157 403.841 -26.368 900 20.786 187.294 173.394 12.510 494.241 392.611 -22.787 1000 20.786 189.484 174.896 14.589 423.818 383.448 -20.029 1100 20.786 191.465 176.313 16.667 425.896 379.310 -18.012 1200 20.786 193.274 177.653 18.746 427.975 374.984 -16.323 1300 20.786 194.938 178.919 20.824 430.053 370.483 -14.886 1400 20.786 196.478 180.119 22.903 432.131 365.823 -13.649 1500 20.786 197.912 181.258 24.982 434.209 361.014 -12.572 1600 20.786 199.254 182.341 27.060 436.285 356.067 -11.624 1700 20.786 200.514 183.374 29.139 438.358 350.990 -10.785 1800 20.786 201.702 184.359 31.217 440.429 345.791 -10.035 1900 20.786 202.826 185.302 33.296 442.495 340.477 -9.360 2000 20.786 203.892 186.205 35.375 444.555 335.054 -8.751 2100 20.786 204.906 187.071 37.453 446.606 329.528 -8.197 2200 20.786 205.873 187.904 39.532 448.646 323.906 -7.690 2300 20.786 206.797 188.706 41.610 450.673 318.190 -7.226 2400 20.786 207.682 189.478 43.689 452.684 312.387 -6.799 2500 20.786 208.530 190.223 45.768 454.675 306.500 -6.404 2600 20.786 209.346 190.943 47.846 456.643 300.534 -6.038 2700 20.786 210.130 191.639 49.925 458.586 294.493 -5.697 2800 20.786 210.886 192.313 52.004 460.498 288.380 -5.380 2900 20.786 211.615 192.966 54.082 462.376 282.200 -5.083 3000 20.786 212.320 193.600 56.161 464.215 275.955 -4.805 3100 20.786 213.002 194.215 58.239 466.011 269.650 -4.544 3200 20.786 213.662 194.812 60.318 467.759 263.288 -4.298 3300 20.786 214.301 195.393 62.397 469.469 256.871 -4.066 3400 20.786 214.922 195.959 64.475 471.113 250.404 -3.847 3500 20.786 215.524 196.509 66.554 472.694 243.889 -3.640 3600 20.786 216.110 197.045 68.632 474.215 237.330 -3.444 3700 20.786 216.679 197.568 70.711 475.658 230.729 -3.257 3800 20.786 217.234 198.079 72.790 477.024 224.091 -3.080 3900 20.786 217.774 198.577 74.868 478.307 217.418 -2.912 4000 20.786 218.300 199.063 76.947 479.515 210.712 -2.752 4100 20.786 218.813 199.539 79.025 480.619 203.978 -2.599 4200 20.786 219.314 200.004 81.104 481.623 197.218 -2.453 4300 20.786 219.803 200.458 83.183 482.524 190.436 -2.313 4400 20.786 220.281 200.904 85.261 483.613 183.603 -2.180 4500 20.786 220.748 201.339 87.340 484.491 176.763 -2.052 4600 20.786 221.205 201.766 89.418 485.186 169.914 -1.929 4700 20.786 221.652 202.185 91.497 485.759 163.054 -1.812 4800 20.786 222.090 202.595 93.576 486.227 156.183 -1.700 4900 20.786 222.518 202.997 95.654 486.589 149.303 -1.592 5000 20.786 222.938 203.392 97.733 487.097 142.386 -1.487 5100 20.786 223.350 203.779 99.811 487.289 135.490 -1.388 5200 20.786 223.753 204.159 101.890 487.379 128.591 -1.292 5300 20.786 224.149 204.533 103.969 487.370 121.691 -1.199 5400 20.786 224.538 204.900 106.047 487.262 114.792 -1.110 5500 20.786 224.919 205.260 108.126 487.058 107.896 -1.025 5600 20.786 225.294 205.614 110.204 487.144 100.950 -0.942 5700 20.786 225.662 205.963 112.283 486.804 94.057 -0.862 5800 20.786 226.023 206.306 114.362 486.381 87.170 -0.785 5900 20.786 226.379 206.643 116.440 485.879 80.291 -0.711 6000 20.786 226.728 206.975 118.519 485.302 73.422 -0.639