silicon
- Formula: Si
- Molecular weight: 28.0855
- IUPAC Standard InChI: InChI=1S/Si
- IUPAC Standard InChIKey: XUIMIQQOPSSXEZ-UHFFFAOYSA-N
- CAS Registry Number: 7440-21-3
- Chemical structure:
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- Other data available:
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- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
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- Computational Chemistry Comparison and Benchmark Database
- Gas Phase Kinetics Database
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 3504.616 - 6000. |
|---|---|
| A | 3.487861 |
| B | 1.248720 |
| C | -0.257858 |
| D | 0.017686 |
| E | 0.551961 |
| F | 107.6330 |
| G | 45.47070 |
| H | 107.5530 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1967 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 3505. | 5.50 | 52.87 | 48.08 | 16.78 |
| 3600. | 5.51 | 53.02 | 48.21 | 17.31 |
| 3700. | 5.51 | 53.17 | 48.34 | 17.86 |
| 3800. | 5.52 | 53.31 | 48.47 | 18.41 |
| 3900. | 5.52 | 53.46 | 48.60 | 18.96 |
| 4000. | 5.52 | 53.60 | 48.72 | 19.51 |
| 4100. | 5.52 | 53.73 | 48.84 | 20.07 |
| 4200. | 5.53 | 53.87 | 48.96 | 20.62 |
| 4300. | 5.53 | 54.00 | 49.07 | 21.17 |
| 4400. | 5.53 | 54.12 | 49.19 | 21.72 |
| 4500. | 5.52 | 54.25 | 49.30 | 22.28 |
| 4600. | 5.52 | 54.37 | 49.41 | 22.83 |
| 4700. | 5.52 | 54.49 | 49.51 | 23.38 |
| 4800. | 5.52 | 54.61 | 49.62 | 23.93 |
| 4900. | 5.52 | 54.72 | 49.72 | 24.49 |
| 5000. | 5.52 | 54.83 | 49.82 | 25.04 |
| 5100. | 5.52 | 54.94 | 49.92 | 25.59 |
| 5200. | 5.52 | 55.05 | 50.02 | 26.14 |
| 5300. | 5.52 | 55.15 | 50.12 | 26.69 |
| 5400. | 5.52 | 55.26 | 50.21 | 27.24 |
| 5500. | 5.52 | 55.36 | 50.30 | 27.80 |
| 5600. | 5.52 | 55.46 | 50.39 | 28.35 |
| 5700. | 5.52 | 55.55 | 50.48 | 28.90 |
| 5800. | 5.52 | 55.65 | 50.57 | 29.45 |
| 5900. | 5.53 | 55.74 | 50.66 | 30.00 |
| 6000. | 5.53 | 55.84 | 50.74 | 30.56 |
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
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