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Which of the following equations represents a displacement reaction in which oxidation and reduction occur simultaneously?

Answer and explanation

Correct answer: \(\mathrm{Zn + CuSO_4 \rightarrow ZnSO_4 + Cu}\)

In option A, zinc, \(\mathrm{Zn}\), displaces copper from copper sulfate, so the reaction is a displacement reaction. The oxidation state of Zn changes from \(0\) to \(+2\), showing oxidation, while that of \(\mathrm{Cu^{2+}}\) changes from \(+2\) to \(0\), showing reduction. Thus, it is a redox displacement reaction. In contrast, option C also involves oxidation and reduction, but it is a photochemical decomposition reaction, not a displacement reaction.

Related tags

Chemical ReactionsRedox ReactionDisplacement ReactionOxidation StatesChemical Equations

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