disodium peroxide
- Formula: Na2O2
- Molecular weight: 77.9783
- IUPAC Standard InChI: InChI=1S/2Na.O2/c;;1-2/q2*+1;-2
- IUPAC Standard InChIKey: PFUVRDFDKPNGAV-UHFFFAOYSA-N
- CAS Registry Number: 1313-60-6
- 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. - Other names: Sodium peroxide
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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. - 785. | 785. - 2500. |
|---|---|---|
| A | 15.27340 | 27.15010 |
| B | 31.49601 | -4.282630×10-8 |
| C | -29.47591 | 2.128470×10-8 |
| D | 12.11820 | -3.582501×10-9 |
| E | -0.091997 | -5.257371×10-9 |
| F | -128.6880 | -130.4230 |
| G | 32.43150 | 54.72020 |
| H | -122.6600 | -122.6600 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1968 | 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) |
|---|---|---|---|---|
| 298. | 21.33 | 22.64 | 22.66 | -0.01 |
| 300. | 21.37 | 22.79 | 22.66 | 0.04 |
| 400. | 23.36 | 29.22 | 23.52 | 2.28 |
| 500. | 24.80 | 34.60 | 25.22 | 4.69 |
| 600. | 25.92 | 39.22 | 27.17 | 7.23 |
| 700. | 26.85 | 43.29 | 29.19 | 9.87 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 785. | 27.15 | 48.15 | 30.89 | 13.55 |
| 800. | 27.15 | 48.66 | 31.22 | 13.96 |
| 900. | 27.15 | 51.86 | 33.34 | 16.67 |
| 1000. | 27.15 | 54.72 | 35.33 | 19.39 |
| 1100. | 27.15 | 57.31 | 37.22 | 22.10 |
| 1200. | 27.15 | 59.67 | 38.99 | 24.82 |
| 1300. | 27.15 | 61.84 | 40.66 | 27.53 |
| 1400. | 27.15 | 63.86 | 42.25 | 30.25 |
| 1500. | 27.15 | 65.73 | 43.75 | 32.96 |
| 1600. | 27.15 | 67.48 | 45.18 | 35.68 |
| 1700. | 27.15 | 69.13 | 46.54 | 38.39 |
| 1800. | 27.15 | 70.68 | 47.84 | 41.11 |
| 1900. | 27.15 | 72.15 | 49.08 | 43.82 |
| 2000. | 27.15 | 73.54 | 50.27 | 46.54 |
| 2100. | 27.15 | 74.86 | 51.41 | 49.25 |
| 2200. | 27.15 | 76.13 | 52.51 | 51.97 |
| 2300. | 27.15 | 77.33 | 53.56 | 54.68 |
| 2400. | 27.15 | 78.49 | 54.57 | 57.40 |
| 2500. | 27.15 | 79.60 | 55.55 | 60.11 |
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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