Decomposition of Ozone

2O3 → 3O2

Aperçu

Ozone decomposes into molecular oxygen. In the stratosphere, this reaction is part of the ozone-oxygen cycle that protects Earth from UV radiation. CFCs catalyze this decomposition, leading to ozone layer depletion, which was the subject of the Montreal Protocol.

Participants

Rôle Substance Coefficient État
Produit Oxygen O 3 (g)

Exemple du quotidien

The ozone layer protects us from harmful UV radiation, and its depletion by CFCs led to the successful international Montreal Protocol treaty.

Importance industrielle

Understanding ozone decomposition was crucial for environmental policy. Ozone generators are used for water treatment and air purification, where controlled decomposition provides disinfection.

Propriétés

Type
Decomposition
Réversible
Oui
Énergie
Exothermique
ΔH
-285,4 kJ/mol
Catalyseur
CFCs (chlorofluorocarbons) in stratosphere

Réactions associées

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Decomposition of Ozone?
The balanced equation is: 2O₃ → 3O₂.
What type of reaction is Decomposition of Ozone?
Decomposition of Ozone is a decomposition reaction. It is reversible under certain conditions.
Is Decomposition of Ozone exothermic or endothermic?
Decomposition of Ozone is exothermic (releases energy). The enthalpy change (ΔH) is -285.4 kJ/mol.
What conditions are needed for Decomposition of Ozone?
This reaction requires a catalyst (CFCs (chlorofluorocarbons) in stratosphere).