calcium oxide
- Formula: CaO
- Molecular weight: 56.077
- IUPAC Standard InChI: InChI=1S/Ca.O
- IUPAC Standard InChIKey: ODINCKMPIJJUCX-UHFFFAOYSA-N
- CAS Registry Number: 1305-78-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Calcium 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 3200. - 4500. |
|---|---|
| A | 62.76000 |
| B | 4.629681×10-7 |
| C | -1.092037×10-7 |
| D | 8.966312×10-9 |
| E | 6.504656×10-7 |
| F | -591.8059 |
| G | 116.8909 |
| H | -557.3339 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 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) |
|---|---|---|---|---|
| 3200. | 62.76 | 189.9 | 137.9 | 166.4 |
| 3300. | 62.76 | 191.8 | 139.5 | 172.6 |
| 3400. | 62.76 | 193.7 | 141.1 | 178.9 |
| 3500. | 62.76 | 195.5 | 142.6 | 185.2 |
| 3600. | 62.76 | 197.3 | 144.1 | 191.5 |
| 3700. | 62.76 | 199.0 | 145.6 | 197.7 |
| 3800. | 62.76 | 200.7 | 147.0 | 204.0 |
| 3900. | 62.76 | 202.3 | 148.4 | 210.3 |
| 4000. | 62.76 | 203.9 | 149.8 | 216.6 |
| 4100. | 62.76 | 205.4 | 151.1 | 222.8 |
| 4200. | 62.76 | 207.0 | 152.4 | 229.1 |
| 4300. | 62.76 | 208.4 | 153.7 | 235.4 |
| 4400. | 62.76 | 209.9 | 155.0 | 241.7 |
| 4500. | 62.76 | 211.3 | 156.2 | 247.9 |
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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