Magnesium Boride (MgB4) B4Mg1(cr)
 
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 -9.519 -104.683 -104.683 INFINITE
100 17.238 8.033 97.487 -8.945 -104.848 -104.578 54.626
200 46.275 28.702 57.635 -5.786 -105.028 -104.205 27.215
 
298.15 70.333 51.923 51.923 0. -105.018 -103.801 18.185
 
300 70.710 52.360 51.925 0.130 -105.018 -103.793 18.072
400 79.496 73.935 54.807 7.651 -105.503 -103.339 13.495
500 87.027 92.491 60.529 15.981 -106.763 -102.664 10.725
 
600 94.140 109.006 67.256 25.050 -108.386 -101.695 8.853
700 99.956 123.955 74.305 34.755 -110.174 -100.440 7.495
800 105.730 137.684 81.380 45.043 -112.005 -98.924 6.459
900 111.043 150.450 88.354 55.887 -113.807 -97.180 5.640
1000 115.729 162.403 95.167 67.235 -124.164 -94.526 4.938
 
1100 118.512 173.561 101.793 78.945 -126.005 -91.473 4.344
1200 121.629 184.004 108.213 90.949 -127.787 -88.254 3.842
1300 125.525 193.897 114.427 103.311 -129.422 -84.892 3.411
1400 128.867 203.325 120.443 116.036 -258.297 -78.244 2.919
1500 131.587 212.311 126.270 129.062 -258.286 -65.382 2.277
 
1600 133.888 220.879 131.917 142.339 -258.193 -52.525 1.715
1700 135.562 229.046 137.393 155.811 -258.064 -39.674 1.219
1800 137.235 236.842 142.703 169.451 -257.921 -26.832 0.779
1900 138.909 244.307 147.855 183.258 -257.759 -13.998 0.385
2000 140.582 251.475 152.858 197.233 -257.573 -1.173 0.031
 
PREVIOUS: March 1963 CURRENT: March 1965
 
Magnesium Boride (MgB4) B4Mg1(cr)

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