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.
Frequently asked questions
What is the correct answer to this question?
Copper is less reactive than zinc
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
