niobium oxide
- Formula: NbO
- Molecular weight: 108.9058
- IUPAC Standard InChI: InChI=1S/Nb.O
- IUPAC Standard InChIKey: BFRGSJVXBIWTCF-UHFFFAOYSA-N
- CAS Registry Number: 12034-57-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Niobium monoxide
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Gas Phase Heat Capacity (Shomate Equation)
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 3000. - 6000. |
|---|---|
| A | 35.73230 |
| B | 0.800852 |
| C | 0.023404 |
| D | 0.018463 |
| E | -0.511085 |
| F | 186.3110 |
| G | 278.9980 |
| H | 198.7400 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1973 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 3000. | 38.79 | 321.0 | 287.9 | 99.13 |
| 3100. | 38.94 | 322.2 | 289.0 | 103.0 |
| 3200. | 39.09 | 323.5 | 290.1 | 106.9 |
| 3300. | 39.25 | 324.7 | 291.1 | 110.8 |
| 3400. | 39.41 | 325.8 | 292.1 | 114.8 |
| 3500. | 39.57 | 327.0 | 293.1 | 118.7 |
| 3600. | 39.74 | 328.1 | 294.0 | 122.7 |
| 3700. | 39.91 | 329.2 | 295.0 | 126.7 |
| 3800. | 40.09 | 330.3 | 295.9 | 130.7 |
| 3900. | 40.27 | 331.3 | 296.8 | 134.7 |
| 4000. | 40.46 | 332.3 | 297.7 | 138.7 |
| 4100. | 40.65 | 333.3 | 298.5 | 142.8 |
| 4200. | 40.85 | 334.3 | 299.4 | 146.8 |
| 4300. | 41.05 | 335.3 | 300.2 | 150.9 |
| 4400. | 41.26 | 336.2 | 301.0 | 155.1 |
| 4500. | 41.47 | 337.2 | 301.8 | 159.2 |
| 4600. | 41.68 | 338.1 | 302.6 | 163.3 |
| 4700. | 41.91 | 339.0 | 303.3 | 167.5 |
| 4800. | 42.14 | 339.9 | 304.1 | 171.7 |
| 4900. | 42.37 | 340.7 | 304.8 | 176.0 |
| 5000. | 42.61 | 341.6 | 305.5 | 180.2 |
| 5100. | 42.85 | 342.4 | 306.3 | 184.5 |
| 5200. | 43.11 | 343.3 | 307.0 | 188.8 |
| 5300. | 43.36 | 344.1 | 307.7 | 193.1 |
| 5400. | 43.63 | 344.9 | 308.3 | 197.4 |
| 5500. | 43.90 | 345.7 | 309.0 | 201.8 |
| 5600. | 44.18 | 346.5 | 309.7 | 206.2 |
| 5700. | 44.46 | 347.3 | 310.3 | 210.7 |
| 5800. | 44.75 | 348.1 | 311.0 | 215.1 |
| 5900. | 45.05 | 348.8 | 311.6 | 219.6 |
| 6000. | 45.35 | 349.6 | 312.2 | 224.1 |
References
Go To: Top, Gas Phase Heat Capacity (Shomate Equation), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Notes
Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References
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