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What colour does silver chloride become when kept in sunlight?

Answer and explanation

Correct answer: Grey

Silver chloride is white. When kept in sunlight, it undergoes photodecomposition, forming metallic silver. This makes its colour change from white to grey.

\(2\text{AgCl}(s) \xrightarrow{\text{sunlight}} 2\text{Ag}(s) + \text{Cl}_2(g)\)

Green is incorrect because no green substance is produced in this reaction.

Related tags

Class 10 ScienceChemical ReactionsPhotodecompositionSilver ChlorideSunlightColour Change

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