Dioxosilane
- Formula: O2Si
- Molecular weight: 60.0843
- IUPAC Standard InChI: InChI=1S/O2Si/c1-3-2
- IUPAC Standard InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N
- CAS Registry Number: 7631-86-9
- 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. - Species with the same structure:
- Other names: Amorphous silica; Hydrolyzed silica (cab-o-sil); Crystalline silica; Silicon dioxide; Silica; Silicon(iv) oxide
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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) | 1996. - 4500. |
|---|---|
| A | 20.50000 |
| B | -0.000004 |
| C | 0.000001 |
| D | -9.103920×10-8 |
| E | -0.000004 |
| F | -227.7414 |
| G | 27.08987 |
| H | -215.7412 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 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) |
|---|---|---|---|---|
| 1996. | 20.50 | 41.26 | 26.77 | 28.92 |
| 2000. | 20.50 | 41.30 | 26.80 | 29.00 |
| 2100. | 20.50 | 42.30 | 27.51 | 31.05 |
| 2200. | 20.50 | 43.25 | 28.21 | 33.10 |
| 2300. | 20.50 | 44.16 | 28.88 | 35.15 |
| 2400. | 20.50 | 45.04 | 29.54 | 37.20 |
| 2500. | 20.50 | 45.87 | 30.17 | 39.25 |
| 2600. | 20.50 | 46.68 | 30.79 | 41.30 |
| 2700. | 20.50 | 47.45 | 31.40 | 43.35 |
| 2800. | 20.50 | 48.20 | 31.98 | 45.40 |
| 2900. | 20.50 | 48.92 | 32.55 | 47.45 |
| 3000. | 20.50 | 49.61 | 33.11 | 49.50 |
| 3100. | 20.50 | 50.28 | 33.65 | 51.55 |
| 3200. | 20.50 | 50.93 | 34.18 | 53.60 |
| 3300. | 20.50 | 51.57 | 34.70 | 55.65 |
| 3400. | 20.50 | 52.18 | 35.21 | 57.70 |
| 3500. | 20.50 | 52.77 | 35.70 | 59.75 |
| 3600. | 20.50 | 53.35 | 36.18 | 61.80 |
| 3700. | 20.50 | 53.91 | 36.65 | 63.85 |
| 3800. | 20.50 | 54.46 | 37.12 | 65.90 |
| 3900. | 20.50 | 54.99 | 37.57 | 67.95 |
| 4000. | 20.50 | 55.51 | 38.01 | 70.00 |
| 4100. | 20.50 | 56.02 | 38.44 | 72.05 |
| 4200. | 20.50 | 56.51 | 38.87 | 74.10 |
| 4300. | 20.50 | 56.99 | 39.28 | 76.15 |
| 4400. | 20.50 | 57.46 | 39.69 | 78.20 |
| 4500. | 20.50 | 57.92 | 40.09 | 80.25 |
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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