Sodium hydride
- Formula: HNa
- Molecular weight: 23.99771
- IUPAC Standard InChI: InChI=1S/Na.H
- IUPAC Standard InChIKey: MPMYQQHEHYDOCL-UHFFFAOYSA-N
- CAS Registry Number: 7646-69-7
- Chemical structure:
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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. - 1500. |
|---|---|
| A | 22.24729 |
| B | 71.68112 |
| C | -43.55126 |
| D | 9.435674 |
| E | -0.321076 |
| F | -66.96785 |
| G | 45.62610 |
| H | -56.44216 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1963 |
| 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. | 36.37 | 40.01 | 40.01 | -0.00 |
| 300. | 36.52 | 40.25 | 40.02 | 0.07 |
| 400. | 42.55 | 51.63 | 41.53 | 4.04 |
| 500. | 47.10 | 61.64 | 44.57 | 8.53 |
| 600. | 50.72 | 70.56 | 48.17 | 13.43 |
| 700. | 53.67 | 78.60 | 51.95 | 18.65 |
| 800. | 56.05 | 85.93 | 55.75 | 24.14 |
| 900. | 57.97 | 92.65 | 59.48 | 29.85 |
| 1000. | 59.49 | 98.84 | 63.11 | 35.73 |
| 1100. | 60.69 | 104.6 | 66.62 | 41.74 |
| 1200. | 61.63 | 109.9 | 70.01 | 47.85 |
| 1300. | 62.37 | 114.9 | 73.27 | 54.06 |
| 1400. | 62.97 | 119.5 | 76.41 | 60.32 |
| 1500. | 63.48 | 123.9 | 79.43 | 66.65 |
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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