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 (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. - 785. | 785. - 2500. |
|---|---|---|
| A | 63.90391 | 113.5960 |
| B | 131.7793 | -1.791853×10-7 |
| C | -123.3272 | 8.905519×10-8 |
| D | 50.70255 | -1.498919×10-8 |
| E | -0.384917 | -2.199685×10-8 |
| F | -538.4306 | -545.6898 |
| G | 135.6934 | 228.9493 |
| H | -513.2094 | -513.2094 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1968 | Data last reviewed in June, 1968 |
| 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. | 89.23 | 94.74 | 94.81 | -0.02 |
| 300. | 89.43 | 95.33 | 94.81 | 0.16 |
| 400. | 97.72 | 122.3 | 98.42 | 9.54 |
| 500. | 103.8 | 144.8 | 105.5 | 19.63 |
| 600. | 108.5 | 164.1 | 113.7 | 30.25 |
| 700. | 112.3 | 181.1 | 122.1 | 41.29 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 785. | 113.6 | 201.5 | 129.2 | 56.69 |
| 800. | 113.6 | 203.6 | 130.6 | 58.40 |
| 900. | 113.6 | 217.0 | 139.5 | 69.76 |
| 1000. | 113.6 | 228.9 | 147.8 | 81.12 |
| 1100. | 113.6 | 239.8 | 155.7 | 92.48 |
| 1200. | 113.6 | 249.7 | 163.1 | 103.8 |
| 1300. | 113.6 | 258.8 | 170.1 | 115.2 |
| 1400. | 113.6 | 267.2 | 176.8 | 126.6 |
| 1500. | 113.6 | 275.0 | 183.1 | 137.9 |
| 1600. | 113.6 | 282.3 | 189.0 | 149.3 |
| 1700. | 113.6 | 289.2 | 194.7 | 160.6 |
| 1800. | 113.6 | 295.7 | 200.2 | 172.0 |
| 1900. | 113.6 | 301.9 | 205.4 | 183.4 |
| 2000. | 113.6 | 307.7 | 210.3 | 194.7 |
| 2100. | 113.6 | 313.2 | 215.1 | 206.1 |
| 2200. | 113.6 | 318.5 | 219.7 | 217.4 |
| 2300. | 113.6 | 323.6 | 224.1 | 228.8 |
| 2400. | 113.6 | 328.4 | 228.3 | 240.2 |
| 2500. | 113.6 | 333.0 | 232.4 | 251.5 |
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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