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Potassium peroxide
K2O2structure.jpg
IUPAC name
Identifiers
CAS number 17014-71-0
PubChem 28202
Properties
Molecular formula K2O2
Molar mass 110.196 g/mol
Appearance yellow amorphous solid
Melting point

490°C

Solubility in water reacts with water[1]
Structure
Crystal structure Orthorombic
Space group Cmca, oS16
Thermochemistry
Std enthalpy of
formation
ΔfHo298
-494.1 kJ•mol-1
Standard molar
entropy
So298
102.1 J•mol-1•K-1[1]
Hazards
NFPA 704
NFPA 704.svg
0
3
1
OX
Related compounds
Other anions Potassium oxide
Potassium superoxide
Potassium chloride
Other cations Lithium peroxide
Sodium peroxide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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).

References

  1. ^ a b Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 477; 520. ISBN 0849305942.  
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