sodium tetrahydroborate
- Formula: BH4Na
- Molecular weight: 37.833
- IUPAC Standard InChI: InChI=1S/BH4.Na/h1H4;/q-1;+1
- IUPAC Standard InChIKey: YOQDYZUWIQVZSF-UHFFFAOYSA-N
- CAS Registry Number: 16940-66-2
- 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 2000. |
|---|---|
| A | 8.153170 |
| B | 42.28530 |
| C | -25.10631 |
| D | 4.958920 |
| E | 0.180473 |
| F | -49.33910 |
| G | 23.59620 |
| H | -45.84990 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1964 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 298. | 20.69 | 24.24 | 24.24 | 0.00 |
| 300. | 20.72 | 24.38 | 24.24 | 0.04 |
| 400. | 22.50 | 30.57 | 25.07 | 2.20 |
| 500. | 24.36 | 35.79 | 26.71 | 4.54 |
| 600. | 26.06 | 40.39 | 28.61 | 7.07 |
| 700. | 27.52 | 44.52 | 30.59 | 9.75 |
| 800. | 28.73 | 48.28 | 32.57 | 12.56 |
| 900. | 29.71 | 51.72 | 34.51 | 15.49 |
| 1000. | 30.47 | 54.89 | 36.39 | 18.50 |
| 1100. | 31.04 | 57.82 | 38.21 | 21.57 |
| 1200. | 31.44 | 60.54 | 39.96 | 24.70 |
| 1300. | 31.70 | 63.07 | 41.64 | 27.86 |
| 1400. | 31.84 | 65.42 | 43.26 | 31.03 |
| 1500. | 31.91 | 67.62 | 44.81 | 34.22 |
| 1600. | 31.92 | 69.68 | 46.30 | 37.41 |
| 1700. | 31.91 | 71.62 | 47.73 | 40.61 |
| 1800. | 31.90 | 73.44 | 49.11 | 43.80 |
| 1900. | 31.92 | 75.17 | 50.44 | 46.99 |
| 2000. | 32.02 | 76.81 | 51.72 | 50.18 |
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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