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(a) AgBr should be kept away from sunlight.
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Silver bromide is a photosensitive compound that decomposes when exposes to sunlight. That is the reason it is always kept in the dark bottles. The reaction of silver chloride with sunlight is also called as photolytic decomposition reaction in which the decomposition reaction carried out by sunlight.
Explanation:
What happens when AgBr is exposed to sunlight?
The silver bromide crystals are light sensitive. Upon exposure to light, the silver bromide crystals are altered to form a latent image. ... The electron is then trapped by AgS contaminants in the AgBr crystal lattice. The electron then reduces the Ag+ to Ag0 (which is metallic silver).
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