disodium oxide
- Formula: Na2O
- Molecular weight: 61.9789
- IUPAC Standard InChI: InChI=1S/2Na.O
- IUPAC Standard InChIKey: QVUYWFOHKOTLOB-UHFFFAOYSA-N
- CAS Registry Number: 1313-59-3
- Chemical structure:
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1405.2 - 3000. |
|---|---|
| A | 25.00000 |
| B | 2.368341×10-10 |
| C | -1.439310×10-10 |
| D | 2.660271×10-11 |
| E | 5.647290×10-12 |
| F | -96.56539 |
| G | 52.14871 |
| H | -89.11171 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1968 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1405. | 25.00 | 60.65 | 40.96 | 27.68 |
| 1500. | 25.00 | 62.29 | 42.25 | 30.05 |
| 1600. | 25.00 | 63.90 | 43.56 | 32.55 |
| 1700. | 25.00 | 65.41 | 44.80 | 35.05 |
| 1800. | 25.00 | 66.84 | 45.98 | 37.55 |
| 1900. | 25.00 | 68.20 | 47.12 | 40.05 |
| 2000. | 25.00 | 69.48 | 48.20 | 42.55 |
| 2100. | 25.00 | 70.70 | 49.25 | 45.05 |
| 2200. | 25.00 | 71.86 | 50.25 | 47.55 |
| 2300. | 25.00 | 72.97 | 51.21 | 50.05 |
| 2400. | 25.00 | 74.04 | 52.14 | 52.55 |
| 2500. | 25.00 | 75.06 | 53.04 | 55.05 |
| 2600. | 25.00 | 76.04 | 53.90 | 57.55 |
| 2700. | 25.00 | 76.98 | 54.74 | 60.05 |
| 2800. | 25.00 | 77.89 | 55.55 | 62.55 |
| 2900. | 25.00 | 78.77 | 56.34 | 65.05 |
| 3000. | 25.00 | 79.61 | 57.10 | 67.55 |
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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