Potassium peroxide

Potassium peroxide
	200px
Names
	IUPAC name Potassium peroxide
Identifiers
CAS Number	17014-71-0
ChemSpider	26237
EC Number	241-089-8
Jmol 3D model	Interactive image
PubChem	28202
	InChI InChI=1S/2K.O2/c;;1-2/q2+1;-2 Key: XXQBEVHPUKOQEO-UHFFFAOYSA-N ; InChI=1/2K.O2/c;;1-2/q2+1;-2 Key: XXQBEVHPUKOQEO-UHFFFAOYAV ;
	SMILES [O-][O-].[K+].[K+] ;
Properties
Chemical formula	K2O2
Molar mass	110.196 g/mol
Appearance	yellow amorphous solid
Melting point	490 °C (914 °F; 763 K)
Solubility in water	reacts with water
Structure
Crystal structure	Orthorombic
Space group	Cmca, oS16
Thermochemistry
Std molar; entropy (So298)	113 J·mol−1·K−1
Std enthalpy of; formation (ΔfHo298)	−496 kJ·mol−1
Vapor pressure	{{{value}}}
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).
	verify (what is ?)
	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

This inorganic compound–related article is a stub. You can help Wikipedia by expanding it.