What happens when silver chloride is exposed to sunlight? Write a chemical equation for this reaction. Also give one use of such a reaction.

When silver chloride is exposed to light, it decomposes to form silver metal and chlorine gas which is a photolytic decomposition reaction,decomposition carried out by sunlight.

2AgCl(s) → 2Ag(s) + Cl2

This reaction is used in black and white photography.