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What is the main reason for storing silver bromide in a dark-coloured bottle?

Answer and explanation

Correct answer: To prevent photodecomposition

Silver bromide is photosensitive. In light, it undergoes photodecomposition: \(2\mathrm{AgBr}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Br}_2\). A dark-coloured bottle reduces the light reaching the compound and therefore helps prevent this decomposition. It is not used to increase thermal decomposition or solubility in water.

Related tags

ScienceClass 10Chemical ReactionsPhotodecompositionSilver BromidePhotosensitive Compounds

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