The reaction 2O₃(g) ⇌ 3O₂(g) represents the decomposition of ozone (O₃) into oxygen (O₂). If the reaction is at equilibrium and conditions such as temperature or pressure change, the equilibrium position may shift according to Le Chatelier's principle. An increase in temperature would favor the formation of O₂, while decreasing the pressure could also shift the equilibrium to the right, producing more O₂. Conversely, lowering the temperature or increasing the pressure would favor the formation of O₃.