barium oxide, obtained by calcining witherite
- Formula: BaO
- Molecular weight: 153.326
- IUPAC Standard InChI: InChI=1S/Ba.O
- IUPAC Standard InChIKey: QVQLCTNNEUAWMS-UHFFFAOYSA-N
- CAS Registry Number: 1304-28-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: barium oxide; Barium 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) | 5000. - 6000. |
|---|---|
| A | -1251.230 |
| B | 506.9240 |
| C | -68.96210 |
| D | 3.194891 |
| E | 2905.900 |
| F | 2971.970 |
| G | 616.0870 |
| H | -123.8460 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1974 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 5000. | 74.93 | 349.9 | 305.7 | 220.8 |
| 5100. | 75.91 | 351.4 | 306.6 | 228.4 |
| 5200. | 76.73 | 352.9 | 307.5 | 236.0 |
| 5300. | 77.42 | 354.4 | 308.4 | 243.7 |
| 5400. | 77.96 | 355.8 | 309.2 | 251.5 |
| 5500. | 78.36 | 357.2 | 310.1 | 259.3 |
| 5600. | 78.63 | 358.7 | 310.9 | 267.1 |
| 5700. | 78.77 | 360.0 | 311.8 | 275.0 |
| 5800. | 78.79 | 361.4 | 312.6 | 282.9 |
| 5900. | 78.69 | 362.8 | 313.5 | 290.8 |
| 6000. | 78.49 | 364.1 | 314.3 | 298.6 |
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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