Question

Why silver chloride is stored in dark colored bottles?

Answer 1

Silver chloride:

• Silver chloride, abbreviated $\mathrm{AgCl}$, is a chemical compound.
• This white crystalline substance is widely recognised for its inability to dissolve in water.

Photolytic decomposition of $\mathrm{AgCl}$:

• Silver chloride is a photosensitive chemical compound that easily undergoes photolytic breakdown.
• It quickly interacts with light and loses its characteristic by generating chlorine gas and silver.
• $2\mathrm{AgCl}\left(\mathrm{s}\right)\to 2\mathrm{Ag}\left(\mathrm{s}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$

Silver chloride to be stored in dark colored bottles:

• When exposed to sunshine, silver chloride disintegrates into silver and chlorine gas.
• Dark-colored bottles block the flow of light, preventing light from reaching silver chloride in the bottles and preventing its disintegration.
• In the presence of sunlight, silver chloride disintegrates to silver and chlorine, which function as a filter, preventing the reactions.
• As a result, silver chloride is kept in dark-colored vials.