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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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. - 3200. |
|---|---|
| A | 49.95403 |
| B | 4.887916 |
| C | -0.352056 |
| D | 0.046187 |
| E | -0.825097 |
| F | -652.9718 |
| G | 92.56096 |
| H | -635.0894 |
| 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) |
|---|---|---|---|---|
| 298. | 42.09 | 38.17 | 38.22 | -0.01 |
| 300. | 42.22 | 38.45 | 38.22 | 0.07 |
| 400. | 46.70 | 51.29 | 39.93 | 4.55 |
| 500. | 49.02 | 61.99 | 43.30 | 9.34 |
| 600. | 50.48 | 71.06 | 47.19 | 14.32 |
| 700. | 51.54 | 78.93 | 51.18 | 19.42 |
| 800. | 52.37 | 85.86 | 55.09 | 24.62 |
| 900. | 53.08 | 92.07 | 58.86 | 29.89 |
| 1000. | 53.71 | 97.70 | 62.47 | 35.23 |
| 1100. | 54.28 | 102.8 | 65.91 | 40.64 |
| 1200. | 54.82 | 107.6 | 69.19 | 46.09 |
| 1300. | 55.33 | 112.0 | 72.31 | 51.60 |
| 1400. | 55.81 | 116.1 | 75.29 | 57.16 |
| 1500. | 56.28 | 120.0 | 78.15 | 62.76 |
| 1600. | 56.74 | 123.6 | 80.88 | 68.41 |
| 1700. | 57.19 | 127.1 | 83.49 | 74.11 |
| 1800. | 57.63 | 130.4 | 86.01 | 79.85 |
| 1900. | 58.06 | 133.5 | 88.43 | 85.63 |
| 2000. | 58.48 | 136.5 | 90.75 | 91.46 |
| 2100. | 58.91 | 139.3 | 93.00 | 97.33 |
| 2200. | 59.32 | 142.1 | 95.17 | 103.2 |
| 2300. | 59.74 | 144.7 | 97.27 | 109.2 |
| 2400. | 60.15 | 147.3 | 99.30 | 115.2 |
| 2500. | 60.56 | 149.8 | 101.3 | 121.2 |
| 2600. | 60.97 | 152.1 | 103.2 | 127.3 |
| 2700. | 61.38 | 154.5 | 105.0 | 133.4 |
| 2800. | 61.79 | 156.7 | 106.8 | 139.6 |
| 2900. | 62.20 | 158.9 | 108.6 | 145.8 |
| 3000. | 62.60 | 161.0 | 110.3 | 152.0 |
| 3100. | 63.01 | 163.0 | 112.0 | 158.3 |
| 3200. | 63.42 | 165.0 | 113.6 | 164.6 |
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
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