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If a copper strip is placed in an aqueous zinc sulphate solution and no visible change occurs, what is the correct reason?

Answer and explanation

Correct answer: Copper is less reactive than zinc

A displacement reaction occurs only when the metal placed in the solution is more reactive than the metal ion present in it. Zinc is above copper in the reactivity series, so copper is less reactive and \(\text{Cu} + \text{ZnSO}_4\) gives no reaction. Unlike option B, copper cannot displace zinc ions from zinc sulphate solution to form zinc metal.

Related tags

ScienceClass 10Chemical ReactionsDisplacement ReactionReactivity SeriesCopperZinc Sulphate

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