Potassium Sulfide (K2S)								K2S1(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		74.684		115.060		115.060		0.		-376.560		-362.745		63.551
300		74.726		115.522		115.061		0.138		-376.573		-362.659		63.145
400		77.320		137.375		118.023		7.741		-384.524		-356.897		46.606
500		79.914		154.907		123.702		15.602		-386.806		-349.730		36.536
600		82.508		169.706		130.167		23.723		-388.349		-342.158		29.787
700		85.144		182.621		136.757		32.105		-389.306		-334.377		24.952
800		87.738		194.161		143.224		40.749		-389.826		-326.490		21.318
900		103.554		205.100		149.486		50.053		-442.745		-317.488		18.427
1000		156.063		218.274		155.672		62.602		-438.078		-303.773		15.867
1050.000		194.982		226.816		158.850		71.364		Cp HUMP MAXIMUM
1050.000		194.985		226.816		158.850		71.364		TRANSITION
1100		142.340		234.558		162.127		79.675		-586.914		-281.577		13.371
1200		142.340		246.943		168.686		93.908		-578.724		-254.180		11.064
1221.000		142.340		249.413		170.053		96.898		CRYSTAL <--> LIQUID
1300		142.340		258.336		175.150		108.142		570.550 227.467 9.140
1400		142.340		268.885		181.473		122.376		-562.393		-201.382		7.514
1500		142.340		278.705		187.632		136.610		-554.251		-175.879		6.125
1600		142.340		287.892		193.614		150.844		-546.127		-150.920		4.927
1700		142.340		296.521		199.416		165.078		-538.021		-126.467		3.886
1800		142.340		304.657		205.039		179.312		-529.933		-102.492		2.974
1900		142.340		312.353		210.486		193.546		-521.866		-78.965		2.171
2000		142.340		319.654		215.764		207.780		-513.823		-55.863		1.459
PREVIOUS:								CURRENT: March 1978
Potassium Sulfide (K2S)								K2S1(cr)

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