magnesium oxide
- Formula: MgO
- Molecular weight: 40.3044
- IUPAC Standard InChI: InChI=1S/Mg.O
- IUPAC Standard InChIKey: CPLXHLVBOLITMK-UHFFFAOYSA-N
- CAS Registry Number: 1309-48-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Magnesium 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 5000. - 6000. |
|---|---|
| A | 7.933868 |
| B | 0.464751 |
| C | -0.049429 |
| D | 0.004986 |
| E | 8.094503 |
| F | 20.70512 |
| G | 66.20220 |
| H | 13.90000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 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) |
|---|---|---|---|---|
| 5000. | 9.97 | 80.72 | 70.85 | 49.38 |
| 5100. | 9.99 | 80.92 | 71.04 | 50.38 |
| 5200. | 10.01 | 81.11 | 71.23 | 51.38 |
| 5300. | 10.04 | 81.31 | 71.42 | 52.39 |
| 5400. | 10.06 | 81.49 | 71.61 | 53.39 |
| 5500. | 10.09 | 81.68 | 71.79 | 54.40 |
| 5600. | 10.12 | 81.86 | 71.97 | 55.41 |
| 5700. | 10.15 | 82.04 | 72.14 | 56.42 |
| 5800. | 10.18 | 82.22 | 72.31 | 57.44 |
| 5900. | 10.21 | 82.39 | 72.48 | 58.46 |
| 6000. | 10.24 | 82.56 | 72.65 | 59.48 |
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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