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Question

Why silver chloride is stored in dark colored bottles?


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Solution

Silver chloride:

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

Photolytic decomposition of 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.
  • 2AgCl(s)2Ag(s)+Cl2(g)

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.


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