Potassium peroxide

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
Names
IUPAC name
Potassium peroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.037.339
EC Number 241-089-8
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
Space group
Cmca, oS16
Thermochemistry
113 J·mol−1·K−1[2]
−496 kJ·mol−1[2]
Hazards
NFPA 704
0
3
2
W
OX
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).
N verify (what is YN ?)
Infobox references

Potassium peroxide reacts with water to form potassium hydroxide and oxygen:

2 K2O2 + 2 H2O → 4 KOH + O2

References

  1. Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 477, 520. ISBN 0-8493-0594-2.
  2. Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 0-618-94690-X.


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