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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Liquid 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2286. to 5000. |
|---|---|
| A | 16.00000 |
| B | 4.686783×10-7 |
| C | -7.889604×10-8 |
| D | 3.500001×10-9 |
| E | 8.576028×10-7 |
| F | -125.6353 |
| G | 37.35947 |
| H | -117.5017 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1974 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 2286. | 16.00 | 50.59 | 38.15 | 28.44 |
| 2300. | 16.00 | 50.69 | 38.22 | 28.67 |
| 2400. | 16.00 | 51.37 | 38.76 | 30.27 |
| 2500. | 16.00 | 52.02 | 39.27 | 31.87 |
| 2600. | 16.00 | 52.65 | 39.78 | 33.47 |
| 2700. | 16.00 | 53.25 | 40.26 | 35.07 |
| 2800. | 16.00 | 53.83 | 40.74 | 36.67 |
| 2900. | 16.00 | 54.39 | 41.20 | 38.27 |
| 3000. | 16.00 | 54.94 | 41.65 | 39.87 |
| 3100. | 16.00 | 55.46 | 42.09 | 41.47 |
| 3200. | 16.00 | 55.97 | 42.51 | 43.07 |
| 3300. | 16.00 | 56.46 | 42.93 | 44.67 |
| 3400. | 16.00 | 56.94 | 43.33 | 46.27 |
| 3500. | 16.00 | 57.40 | 43.73 | 47.87 |
| 3600. | 16.00 | 57.85 | 44.11 | 49.47 |
| 3700. | 16.00 | 58.29 | 44.49 | 51.07 |
| 3800. | 16.00 | 58.72 | 44.86 | 52.67 |
| 3900. | 16.00 | 59.14 | 45.22 | 54.27 |
| 4000. | 16.00 | 59.54 | 45.57 | 55.87 |
| 4100. | 16.00 | 59.94 | 45.92 | 57.47 |
| 4200. | 16.00 | 60.32 | 46.26 | 59.07 |
| 4300. | 16.00 | 60.70 | 46.59 | 60.67 |
| 4400. | 16.00 | 61.07 | 46.91 | 62.27 |
| 4500. | 16.00 | 61.42 | 47.23 | 63.87 |
| 4600. | 16.00 | 61.78 | 47.54 | 65.47 |
| 4700. | 16.00 | 62.12 | 47.85 | 67.07 |
| 4800. | 16.00 | 62.46 | 48.15 | 68.67 |
| 4900. | 16.00 | 62.79 | 48.45 | 70.27 |
| 5000. | 16.00 | 63.11 | 48.74 | 71.87 |
References
Go To: Top, Liquid 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, Liquid Phase Heat Capacity (Shomate Equation), References
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