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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Solid 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) | 298. - 2210. |
|---|---|
| A | 43.00340 |
| B | 8.847541 |
| C | 0.018576 |
| D | -0.005737 |
| E | -0.402614 |
| F | -434.2210 |
| G | 93.15960 |
| H | -419.6550 |
| 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) |
|---|---|---|---|---|
| 298. | 41.11 | 46.00 | 46.02 | -0.01 |
| 300. | 41.19 | 46.28 | 46.03 | 0.08 |
| 400. | 44.03 | 58.55 | 47.68 | 4.35 |
| 500. | 45.82 | 68.58 | 50.89 | 8.85 |
| 600. | 47.20 | 77.06 | 54.56 | 13.50 |
| 700. | 48.38 | 84.43 | 58.31 | 18.28 |
| 800. | 49.46 | 90.96 | 61.99 | 23.17 |
| 900. | 50.48 | 96.85 | 65.54 | 28.17 |
| 1000. | 51.46 | 102.2 | 68.95 | 33.27 |
| 1100. | 52.42 | 107.2 | 72.20 | 38.46 |
| 1200. | 53.36 | 111.8 | 75.31 | 43.75 |
| 1300. | 54.29 | 116.1 | 78.28 | 49.13 |
| 1400. | 55.21 | 120.1 | 81.13 | 54.61 |
| 1500. | 56.12 | 124.0 | 83.85 | 60.17 |
| 1600. | 57.03 | 127.6 | 86.48 | 65.83 |
| 1700. | 57.93 | 131.1 | 89.00 | 71.58 |
| 1800. | 58.83 | 134.4 | 91.43 | 77.42 |
| 1900. | 59.73 | 137.6 | 93.78 | 83.35 |
| 2000. | 60.63 | 140.7 | 96.05 | 89.36 |
| 2100. | 61.52 | 143.7 | 98.25 | 95.47 |
| 2200. | 62.41 | 146.6 | 100.4 | 101.7 |
References
Go To: Top, Solid 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, Solid Phase Heat Capacity (Shomate Equation), References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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