Potassium peroxide
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Names | |
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IUPAC name
Potassium peroxide | |
Identifiers | |
17014-71-0 ![]() | |
ChemSpider | 26237 |
EC Number | 241-089-8 |
Jmol interactive 3D | Image |
PubChem | 28202 |
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Properties | |
K2O2 | |
Molar mass | 110.196 g/mol |
Appearance | yellow amorphous solid |
Melting point | 490 °C (914 °F; 763 K) |
reacts with water[1] | |
Structure | |
Orthorombic | |
Cmca, oS16 | |
Thermochemistry | |
Std molar entropy (S |
113 J·mol−1·K−1[2] |
Std enthalpy of formation (ΔfH |
−496 kJ·mol−1[2] |
Hazards | |
NFPA 704 | |
Related compounds | |
Other anions |
Potassium oxide Potassium superoxide Potassium chloride |
Other cations |
Lithium peroxide Sodium peroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Infobox references | |
Potassium peroxide is an inorganic compound with the molecular formula K2O2. It is formed as potassium reacts with oxygen in the air, along with potassium oxide (K2O) and potassium superoxide (KO2).
Potassium peroxide reacts with water to form potassium hydroxide and oxygen:
- 2 K2O2 + 2 H2O → 4 KOH + O2
References
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