Sodium Sulfate, IV (Na2SO4)	Na2O4S1(cr)
T(K)	Cp	S	-[G-H(Tr)]/T	H-H(Tr)	delta-f H	delta-f G	log Kf
0														
100														
200														
298.15	128.143	150.157	150.157	0.	-1387.559	-1269.759	222.456
300	128.495	150.950	150.159	0.237	-1387.577	-1269.028	220.957
400	145.101	190.263	155.407	13.943	-1395.654	-1228.904	160.478
458.000	153.331	210.462	161.117	22.600	V <--> IV
500	158.908	224.159	165.842	29.158	1396.687  1187.082 124.014
514.000	160.712	228.572	167.491	31.396	IV <--> I
600	171.322	254.242	178.113	45.677	1396.104  1145.190 99.698
700	182.933	281.530	190.967	63.394	-1394.148	-1103.508	82.345
800	194.046	306.686	203.879	82.246	-1390.999	-1062.190	69.354
900	204.828	330.166	216.620	102.191	-1439.895	-1020.251	59.214
1000	215.371	352.295	229.091	123.203	-1433.438	-973.962	50.875