Sodium Sulfide (Na2S)								Na2S1(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		82.801		96.232		96.232		0.		-366.100		-354.552		62.116
300		82.843		96.744		96.234		0.153		-366.093		-354.480		61.720
400		84.308		120.780		99.501		8.512		-373.575		-350.129		45.722
500		85.772		139.753		105.719		17.017		-375.200		-344.086		35.946
600		87.236		155.522		112.742		25.668		-376.166		-337.761		29.405
700		88.701		169.081		119.844		34.466		-376.619		-331.319		24.723
800		90.165		181.023		126.760		43.411		-376.704		-324.838		21.210
900		91.337		191.717		133.394		52.491		-429.655		-317.282		18.415
1000		92.843		201.418		139.718		61.700		-428.077		-304.880		15.925
1100		110.458		210.823		145.749		71.581		-425.884		-292.653		13.897
1200		159.494		222.269		151.627		84.771		-614.002		-275.864		12.008
1276.000		211.921		233.718		156.162		98.962		Cp LAMBDA MAXIMUM
1276.000		211.939		233.718		156.162		98.962		TRANSITION
1300		187.652		237.411		157.629		103.718		-601.115		-248.179		9.972
1400		137.152		249.134		163.773		119.505		-591.403		-221.426		8.262
1445.000		133.888		253.390		166.498		125.559		CRYSTAL <--> LIQUID
1500		133.888		258.392		169.777		132.923		584.076 195.256 6.799
1600		133.888		267.033		175.588		146.312		-576.793		-169.572		5.536
1700		133.888		275.150		181.208		159.700		-569.524		-144.343		4.435
1800		133.888		282.802		186.642		173.089		-562.270		-119.542		3.469
1900		133.888		290.041		191.895		186.478		-555.029		-95.144		2.616
2000		133.888		296.909		196.976		199.867		-547.802		-71.126		1.858
PREVIOUS: December 1960								CURRENT: March 1978
Sodium Sulfide (Na2S)								Na2S1(cr)

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