Potassium peroxide

• Dikaliumperoxid
• Dikaliumdioxid

Colorless amorphous powder

Fixed

2.14 g · cm -3

490 ° C.

Decomposition

Violent decomposition in water

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Potassium peroxide is a chemical compound selected from the group of peroxides.

Production and representation

Potassium peroxide can be formed by reaction of potassium with oxygen ( eg combustion ), which also form potassium oxide and potassium superoxide.

Potassium peroxide is also formed upon contact of potassium oxide with air.

Properties

Potassium peroxide is a very reactive oxidising solids, where he himself is not flammable, but reacts violently with combustible materials. So it decomposes violently on contact with water.

The standard enthalpy of potassium peroxide is ΔHf0 = -363 kJ / mol.

Use

Potassium peroxide is used as oxidizing agent and a bleaching agent as well as for the purification of air.