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A student calls the reaction \(2AgCl(s) \xrightarrow{\text{sunlight}} 2Ag(s)+Cl_2(g)\) a displacement reaction because chlorine is released. What is the best correction of the student's error?

Answer and explanation

Correct answer: It is a photochemical decomposition reaction because sunlight breaks one compound into simpler substances.

This is a photochemical decomposition reaction because the single compound \(AgCl\) breaks down in sunlight to form silver and chlorine gas. In a displacement reaction, a second, more reactive element removes another element from its compound; no such reactant is present here.

Related tags

Chemical ReactionsPhotochemical DecompositionSilver ChlorideReaction ClassificationClass 10 Science

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