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 (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 | 33.19530 |
| B | 1.944521 |
| C | -0.206813 |
| D | 0.020861 |
| E | 33.86740 |
| F | 86.63020 |
| G | 276.9900 |
| H | 58.15760 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 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. | 41.71 | 337.7 | 296.4 | 206.6 |
| 5100. | 41.80 | 338.6 | 297.2 | 210.8 |
| 5200. | 41.90 | 339.4 | 298.0 | 215.0 |
| 5300. | 42.00 | 340.2 | 298.8 | 219.2 |
| 5400. | 42.11 | 341.0 | 299.6 | 223.4 |
| 5500. | 42.22 | 341.7 | 300.4 | 227.6 |
| 5600. | 42.34 | 342.5 | 301.1 | 231.8 |
| 5700. | 42.47 | 343.3 | 301.8 | 236.1 |
| 5800. | 42.59 | 344.0 | 302.6 | 240.3 |
| 5900. | 42.73 | 344.7 | 303.3 | 244.6 |
| 6000. | 42.86 | 345.4 | 304.0 | 248.9 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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