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

Answer and explanation

Correct answer: To prevent decomposition caused by light

Silver bromide decomposes in the presence of light to form silver and bromine: \(2\mathrm{AgBr}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Br}_2\). A dark-coloured bottle reduces the light reaching the substance and thus helps prevent this photochemical decomposition. This is not related to dissolving it in water or increasing its hardness.

Related tags

ScienceClass 10Chemical ReactionsPhotochemical DecompositionSilver Bromide

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