Question :

Why do we store silver chloride in dark-coloured bottles?
Submitted on 23/8/2024 | Answered by Vandana Rana

Answer :

Silver chloride is the best example of a light-sensitive chemical compound, and reaction is an example of a photolytic decomposition reaction. It reacts with light very fast and loses its property by forming chlorine gas and silver.

2AgCl(s) ->2Ag(s) + Cl2(g)

Silver chloride decomposes into silver & chlorine gas when exposed to light. Dark-coloured bottles interrupt the path of light such that light cannot reach silver chloride in the bottles, and its decomposition is prevented.