What is the chemical reaction that converts ozone into O2?

The chemical reaction that converts ozone (O3) into oxygen (O2) is a photodissociation process, typically initiated by ultraviolet (UV) light. The reaction can be represented as: 2 O3 → 3 O2. In this process, ozone absorbs UV radiation, causing it to break down into molecular oxygen and a free oxygen atom, which can further react with another ozone molecule, perpetuating the cycle.