iron oxide
- Formula: FeO
- Molecular weight: 71.844
- IUPAC Standard InChI: InChI=1S/Fe.O
- IUPAC Standard InChIKey: UQSXHKLRYXJYBZ-UHFFFAOYSA-N
- CAS Registry Number: 1345-25-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Iron 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. to 1650. |
|---|---|
| A | 45.75120 |
| B | 18.78553 |
| C | -5.952201 |
| D | 0.852779 |
| E | -0.081265 |
| F | -286.7429 |
| G | 110.3120 |
| H | -272.0441 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1965 |
| 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. | 49.93 | 60.72 | 60.75 | -0.01 |
| 300. | 49.97 | 61.06 | 60.75 | 0.09 |
| 400. | 51.86 | 75.70 | 62.74 | 5.19 |
| 500. | 53.44 | 87.45 | 66.54 | 10.45 |
| 600. | 54.84 | 97.32 | 70.87 | 15.87 |
| 700. | 56.11 | 105.9 | 75.27 | 21.42 |
| 800. | 57.28 | 113.4 | 79.58 | 27.09 |
| 900. | 58.36 | 120.2 | 83.72 | 32.87 |
| 1000. | 59.36 | 126.4 | 87.69 | 38.76 |
| 1100. | 60.28 | 132.1 | 91.48 | 44.74 |
| 1200. | 61.14 | 137.4 | 95.09 | 50.81 |
| 1300. | 61.94 | 142.4 | 98.54 | 56.96 |
| 1400. | 62.68 | 147.0 | 101.8 | 63.20 |
| 1500. | 63.38 | 151.3 | 105.0 | 69.50 |
| 1600. | 64.03 | 155.4 | 108.0 | 75.87 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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