		J·K^-1 mol^-1						kJ·mol^-1
Niobium (Nb)								Nb₁(l)

Enthalpy Reference Temperature = T_r = 298.15 K								Standard State Pressure = p° = 0.1 MPa
T/K		C_p^°		S^°		-[G^°-H^°(T_r)]/T		H-H^°(T_r)		_fH^°		_fG^°		log K_f
0
100
200
250

298.15		24.694		47.302		47.302		0.		29.647		26.415		-4.628

300		24.711		47.455		47.302		0.046		29.647		26.395		-4.596
350		25.088		51.293		47.605		1.291		29.647		25.853		-3.858
400		25.393		54.664		48.281		2.553		29.647		25.311		-3.305
450		25.653		57.670		49.160		3.830		29.647		24.770		-2.875
500		25.899		60.386		50.149		5.118		29.647		24.228		-2.531

600		26.347		65.148		52.263		7.731		29.647		23.144		-2.015
700		26.769		69.241		54.403		10.387		29.647		22.060		-1.646
800		27.183		72.842		56.487		13.084		29.647		20.976		-1.370
900		27.593		76.068		58.486		15.823		29.647		19.892		-1.155
1000		27.999		78.996		60.393		18.603		29.647		18.808		-0.982

1100		28.405		81.684		62.208		21.423		29.647		17.725		-0.842
1200		28.798		84.172		63.936		24.284		29.647		16.641		-0.724
1300		29.179		86.492		65.583		27.182		29.647		15.557		-0.625
1400		29.589		88.669		67.155		30.120		29.647		14.473		-0.540
1500		30.062		90.727		68.658		33.102		29.647		13.389		-0.466

1600		30.606		92.684		70.099		36.135		29.647		12.306		-0.402
1700		31.221		94.557		71.483		39.226		29.647		11.222		-0.345

1750.000		31.559		95.467		72.156		40.795		GLASS <--> LIQUID
1750.000		33.472		95.467		72.156		40.795		TRANSITION

1800		33.472		96.410		72.816		42.469		29.734		10.137		-0.294
1900		33.472		98.220		74.106		45.816		29.854		9.044		-0.249
2000		33.472		99.937		75.355		49.163		29.899		7.948		-0.208

2100		33.472		101.570		76.565		52.510		29.861		6.851		-0.170
2200		33.472		103.127		77.737		55.857		29.736		5.757		-0.137
2300		33.472		104.615		78.874		59.205		29.515		4.672		-0.106
2400		33.472		106.039		79.976		62.552		29.188		3.599		-0.078
2500		33.472		107.406		81.046		65.899		28.740		2.541		-0.053

2600		33.472		108.718		82.085		69.246		28.148		1.504		-0.030
2700		33.472		109.982		83.095		72.593		27.372		0.494		-0.010

2750.000		33.472		110.596		83.590		74.267		CRYSTAL <--> LIQUID

2800		33.472		111.199		84.077		75.941		0. 0. 0.
2900		33.472		112.374		85.033		79.288		0.		0.		0.
3000		33.472		113.508		85.963		82.635		0.		0.		0.

3100		33.472		114.606		86.870		85.982		0.		0.		0.
3200		33.472		115.669		87.753		89.329		0.		0.		0.
3300		33.472		116.699		88.615		92.677		0.		0.		0.
3400		33.472		117.698		89.456		96.024		0.		0.		0.
3500		33.472		118.668		90.276		99.371		0.		0.		0.

3600		33.472		119.611		91.078		102.718		0.		0.		0.
3700		33.472		120.528		91.862		106.065		0.		0.		0.
3800		33.472		121.421		92.628		109.413		0.		0.		0.
3900		33.472		122.290		93.377		112.760		0.		0.		0.
4000		33.472		123.138		94.111		116.107		0.		0.		0.

4100		33.472		123.964		94.829		119.454		0.		0.		0.
4200		33.472		124.771		95.532		122.801		0.		0.		0.
4300		33.472		125.558		96.221		126.149		0.		0.		0.
4400		33.472		126.328		96.897		129.496		0.		0.		0.
4500		33.472		127.080		97.559		132.843		0.		0.		0.

4600		33.472		127.816		98.209		136.190		0.		0.		0.
4700		33.472		128.536		98.847		139.537		0.		0.		0.
4800		33.472		129.240		99.473		142.885		0.		0.		0.
4900		33.472		129.931		100.087		146.232		0.		0.		0.
5000		33.472		130.607		100.691		149.579		0.		0.		0.

5100		33.472		131.270		101.284		152.926		0.		0.		0.

5130.824		33.472		131.471		101.465		153.958		FUGACITY = 1 bar

5200		33.472		131.920		101.867		156.273		690.672 9.309 0.094
5300		33.472		132.557		102.440		159.621		-691.004		22.774		-0.224
5400		33.472		133.183		103.004		162.968		-691.309		36.240		-0.351

5600		33.472		134.400		104.103		169.662		-692.094		63.200		-0.590
5800		33.472		135.575		105.168		176.357		-692.992		90.191		-0.812
6000		33.472		136.709		106.201		183.051		-694.007		117.214		-1.020

PREVIOUS: June 1972								CURRENT: December 1973

Niobium (Nb)								Nb₁(l)

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