Sodium Sulfide, Beta (Na2S2) Na2S2(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              
250              
 
298.15 98.625 150.624 150.624 0. -397.062 -392.173 68.707
 
300 98.726 151.234 150.626 0.183 -397.067 -392.142 68.278
400 104.299 180.399 154.565 10.334 -407.354 -389.839 50.908
500 109.872 204.272 162.187 21.042 -410.704 -385.082 40.229
 
600 115.445 224.796 170.949 32.308 -412.640 -379.752 33.060
700 121.018 243.011 179.966 44.131 -413.415 -374.196 27.923
 
753.000 123.972 251.950 184.720 50.624 BETA <--> LIQUID
 
800 126.591 259.534 188.894 56.512 413.275 368.593 24.067
900 132.164 274.766 197.600 69.450 -518.625 -360.893 20.946
1000 137.737 288.979 206.035 82.945 -514.617 -343.578 17.947
 
PREVIOUS: CURRENT: December 1983
 
Sodium Sulfide, Beta (Na2S2) Na2S2(cr)

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