Decomposition of Ozone
2O3 → 3O2
Overview
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
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Product | Oxygen O | 3 | (g) |
Everyday Example
The ozone layer protects us from harmful UV radiation, and its depletion by CFCs led to the successful international Montreal Protocol treaty.
Industrial Importance
Understanding ozone decomposition was crucial for environmental policy. Ozone generators are used for water treatment and air purification, where controlled decomposition provides disinfection.
Properties
- Type
- Decomposition
- Reversible
- Yes
- Energy
- Exothermic
- ΔH
- -285.4 kJ/mol
- Catalyst
- CFCs (chlorofluorocarbons) in stratosphere
Related Reactions
Cracking of Octane (Thermal Cracking)
Decomposition of Ammonium Nitrate
Decomposition of Barium Peroxide
Decomposition of Calcium Carbonate (Calcination)
Decomposition of Calcium Hypochlorite
Decomposition of Carbonic Acid
Decomposition of Hydrogen Peroxide
Decomposition of Iron(II,III) Oxide (Direct Reduction)
Decomposition of Nitroglycerin
Decomposition of Nitrous Oxide (Laughing Gas)
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).