Potassium Borate (K2B4O7) | B4K2O7(l) | |||||||||||||
Enthalpy Reference Temperature = Tr = 298.15 K | Standard State Pressure = p° = 0.1 MPa | |||||||||||||
J·K-1 mol-1 | kJ·mol-1 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
T/K | Cp° | S° | -[G°-H°(Tr)]/T | H-H°(Tr) | fH° | fG° | log Kf | |||||||
0 | ||||||||||||||
100 | ||||||||||||||
200 | ||||||||||||||
250 | ||||||||||||||
298.15 | 170.498 | 237.120 | 237.120 | 0. | -3289.042 | -3100.143 | 543.132 | |||||||
300 | 171.335 | 238.177 | 237.124 | 0.316 | -3289.110 | -3098.971 | 539.579 | |||||||
400 | 206.271 | 292.453 | 244.287 | 19.266 | -3296.965 | -3034.195 | 396.225 | |||||||
500 | 232.840 | 341.499 | 258.908 | 41.296 | -3298.781 | -2968.266 | 310.093 | |||||||
600 | 250.538 | 385.610 | 276.416 | 65.516 | -3299.623 | -2902.072 | 252.648 | |||||||
676.000 | 259.821 | 416.068 | 290.428 | 84.933 | GLASS <--> LIQUID | |||||||||
676.000 | 369.237 | 416.068 | 290.428 | 84.933 | TRANSITION | |||||||||
700 | 375.221 | 429.053 | 294.959 | 93.866 | -3297.277 | -2835.830 | 211.612 | |||||||
800 | 402.501 | 480.977 | 315.000 | 132.781 | -3285.126 | -2770.715 | 180.909 | |||||||
900 | 426.266 | 529.790 | 336.181 | 174.249 | -3271.070 | -2707.239 | 157.124 | |||||||
1000 | 446.558 | 575.818 | 357.866 | 217.952 | -3255.357 | -2645.420 | 138.183 | |||||||
1088.000 | 457.879 | 613.958 | 377.052 | 257.753 | CRYSTAL <--> LIQUID | |||||||||
1100 | 459.361 | 618.988 | 379.664 | 263.257 | 3396.492 2576.011 122.325 | |||||||||
1200 | 471.143 | 659.470 | 401.312 | 309.790 | -3376.892 | -2502.281 | 108.921 | |||||||
1300 | 481.913 | 697.614 | 422.651 | 357.452 | -3356.496 | -2430.219 | 97.647 | |||||||
1400 | 491.670 | 733.691 | 443.591 | 406.139 | -3335.372 | -2359.755 | 88.044 | |||||||
1500 | 500.406 | 767.916 | 464.082 | 455.752 | -3313.601 | -2290.825 | 79.774 | |||||||
1600 | 507.268 | 800.434 | 484.096 | 506.140 | -3291.314 | -2223.364 | 72.585 | |||||||
1700 | 513.544 | 831.378 | 503.622 | 557.186 | -3268.619 | -2157.310 | 66.286 | |||||||
1800 | 519.234 | 860.896 | 522.657 | 608.830 | -3245.569 | -2092.603 | 60.726 | |||||||
1900 | 524.339 | 888.108 | 541.207 | 661.013 | -3222.218 | -2029.185 | 55.786 | |||||||
2000 | 528.858 | 916.121 | 559.282 | 713.678 | -3198.621 | -1967.003 | 51.373 | |||||||
2100 | 532.188 | 942.006 | 576.895 | 766.732 | -3174.868 | -1906.006 | 47.409 | |||||||
2200 | 535.234 | 966.835 | 594.059 | 820.106 | -3151.032 | -1846.140 | 43.833 | |||||||
2300 | 537.995 | 990.689 | 610.789 | 873.770 | -3127.143 | -1787.363 | 40.592 | |||||||
2400 | 540.472 | 1013.639 | 627.099 | 927.696 | -3304.266 | -1725.350 | 37.551 | |||||||
2500 | 542.665 | 1035.747 | 643.005 | 981.855 | -3280.672 | -1660.046 | 34.685 | |||||||
2600 | 544.573 | 1057.069 | 658.523 | 1036.219 | -3256.986 | -1595.688 | 32.058 | |||||||
2700 | 546.196 | 1077.653 | 673.668 | 1090.760 | -3233.240 | -1532.242 | 29.643 | |||||||
2800 | 547.535 | 1097.542 | 688.453 | 1145.449 | -3209.468 | -1469.676 | 27.417 | |||||||
2900 | 548.589 | 1116.775 | 702.893 | 1200.257 | -3185.701 | -1407.963 | 25.360 | |||||||
3000 | 549.359 | 1135.387 | 717.001 | 1255.157 | -3161.975 | -1347.065 | 23.454 | |||||||
PREVIOUS: | CURRENT: March 1963 | |||||||||||||
Potassium Borate (K2B4O7) | B4K2O7(l) |
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