fH°fG°| Sodium Borate (Na2B4O7) | B4Na2O7(cr,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 | 0. | 0. | INFINITE | -30.382 | -3258.983 | -3258.983 | INFINITE | |||||||
| 100 | 76.525 | 50.814 | 321.976 | -27.116 | -3268.658 | -3208.196 | 1675.790 | |||||||
| 200 | 139.746 | 124.566 | 205.130 | -16.113 | -3274.087 | -3145.347 | 821.480 | |||||||
| 298.15 | 186.774 | 189.490 | 189.490 | 0. | -3276.741 | -3081.522 | 539.870 | |||||||
| 300 | 187.447 | 190.648 | 189.494 | 0.346 | -3276.774 | -3080.310 | 536.330 | |||||||
| 400 | 213.802 | 248.460 | 197.196 | 20.505 | -3283.707 | -3014.160 | 393.609 | |||||||
| 500 | 228.534 | 297.784 | 212.510 | 42.637 | -3285.408 | -2946.574 | 307.826 | |||||||
| 600 | 241.500 | 340.624 | 230.368 | 66.154 | -3286.907 | -2878.661 | 250.610 | |||||||
| 700 | 252.697 | 378.715 | 248.889 | 90.878 | -3288.098 | -2810.522 | 209.724 | |||||||
| 800 | 262.128 | 413.077 | 267.299 | 116.622 | -3288.983 | -2742.233 | 179.049 | |||||||
| 900 | 271.215 | 444.482 | 285.266 | 143.294 | -3289.531 | -2673.853 | 155.186 | |||||||
| 1000 | 279.700 | 473.502 | 302.657 | 170.845 | -3289.721 | -2605.430 | 136.094 | |||||||
| 1015.600 | 280.970 | 477.841 | 305.314 | 175.218 | CRYSTAL <--> LIQUID | |||||||||
| 1015.600 | 444.885 | 553.544 | 305.314 | 252.102 | TRANSITION | |||||||||
| 1100 | 444.885 | 589.060 | 325.741 | 289.651 | -3199.134 | -2543.946 | 120.802 | |||||||
| 1200 | 444.885 | 627.770 | 349.320 | 334.139 | -3376.842 | -2480.206 | 107.961 | |||||||
| 1300 | 444.885 | 663.379 | 372.127 | 378.628 | -3359.618 | -2406.187 | 96.682 | |||||||
| 1400 | 444.893 | 696.349 | 394.123 | 423.117 | -3342.693 | -2333.483 | 87.063 | |||||||
| 1500 | 444.885 | 727.043 | 415.306 | 467.605 | -3326.043 | -2261.980 | 78.769 | |||||||
| 1600 | 444.885 | 755.756 | 435.697 | 512.094 | -3309.652 | -2191.578 | 71.548 | |||||||
| 1700 | 444.885 | 782.727 | 455.325 | 556.582 | -3293.507 | -2122.194 | 65.207 | |||||||
| 1800 | 444.885 | 808.156 | 474.227 | 601.071 | -3277.601 | -2053.754 | 59.598 | |||||||
| 1900 | 444.885 | 832.209 | 492.441 | 645.559 | -3261.925 | -1986.191 | 54.604 | |||||||
| 2000 | 444.885 | 855.029 | 510.005 | 690.048 | -3246.476 | -1919.447 | 50.131 | |||||||
| 2100 | 444.885 | 876.735 | 526.956 | 734.536 | -3231.249 | -1853.471 | 46.103 | |||||||
| 2200 | 444.885 | 897.431 | 543.329 | 779.025 | -3216.242 | -1788.213 | 42.458 | |||||||
| 2300 | 444.885 | 917.207 | 559.158 | 823.513 | -3201.453 | -1723.636 | 39.145 | |||||||
| 2400 | 444.885 | 936.141 | 574.473 | 868.002 | -3387.917 | -1655.422 | 36.029 | |||||||
| 2500 | 444.885 | 954.302 | 589.306 | 912.490 | -3373.871 | -1583.524 | 33.086 | |||||||
| 2600 | 444.885 | 971.751 | 603.682 | 956.979 | -3359.909 | -1512.186 | 30.380 | |||||||
| 2700 | 444.885 | 988.541 | 617.627 | 1001.467 | -3346.032 | -1441.382 | 27.885 | |||||||
| 2800 | 444.885 | 1004.720 | 631.165 | 1045.956 | -3332.239 | -1371.091 | 25.578 | |||||||
| 2900 | 444.885 | 1020.332 | 644.317 | 1090.444 | -3318.531 | -1301.295 | 23.439 | |||||||
| 3000 | 444.885 | 1035.414 | 657.103 | 1134.933 | -3304.910 | -1231.967 | 21.450 | |||||||
| PREVIOUS: | CURRENT: March 1965 | |||||||||||||
| Sodium Borate (Na2B4O7) | B4Na2O7(cr,l) | |||||||||||||
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