Potassium Sulfate, Beta (K2SO4) K2O4S1(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              
100              
200              
 
298.15 138.574 192.279 192.279 0. -1424.243 -1311.121 229.703
 
300 138.741 193.137 192.282 0.257 -1424.246 -1310.419 228.164
400 146.858 234.162 197.820 14.537 -1431.462 -1271.452 166.035
500 154.975 267.803 208.548 29.628 -1432.632 -1231.311 128.634
 
600 163.134 296.781 220.891 45.534 -1432.709 -1191.022 103.688
700 171.251 322.537 233.605 62.253 -1431.838 -1150.797 85.874
800 179.368 345.935 246.205 79.784 -1430.146 -1110.755 72.525
 
857.000 184.000 358.437 253.257 90.140 ALPHA <--> BETA
 
900 187.485 367.530 258.500 98.127 1480.836 1069.890 62.095
1000 195.602 387.703 270.423 117.281 -1476.487 -1024.456 53.512
 
1100 203.761 406.729 281.957 137.249 -1629.446 -970.268 46.074
1200 211.878 424.807 293.114 158.031 -1621.806 -910.674 39.641
1300 219.995 442.087 303.914 179.625 -1613.438 -851.747 34.224
 
1342.000 223.384 449.136 308.349 188.936 BETA <--> LIQUID
 
1400 228.112 458.687 314.380 202.030 1604.337 793.492 29.606
1500 236.229 474.702 324.537 225.247 -1594.495 -735.914 25.627
 
PREVIOUS: CURRENT: June 1978
 
Potassium Sulfate, Beta (K2SO4) K2O4S1(cr)

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