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A white sample of silver chloride turns grey when kept in sunlight. Which equation correctly represents this change?

Answer and explanation

Correct answer: \(2AgCl(s) \xrightarrow{\text{sunlight}} 2Ag(s) + Cl_2(g)\)

Silver chloride undergoes photodecomposition in sunlight, producing grey metallic silver and chlorine gas. The balanced equation is \(2AgCl(s) \xrightarrow{\text{sunlight}} 2Ag(s) + Cl_2(g)\). Option B incorrectly shows chlorine as atomic \(Cl\), whereas chlorine is produced as the diatomic gas \(Cl_2\).

Related tags

Chemical ReactionsChemical EquationsPhotodecompositionSilver ChlorideBalancing EquationsClass 10 Science

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