In which of the following mixtures will a metal displacement reaction not occur?
Answer and explanation
Correct answer: \(\mathrm{Cu + ZnSO_4 \rightarrow \text{no reaction}}\)
A displacement reaction occurs only when the free metal is more reactive than the metal present in the salt solution. Copper (Cu) is less reactive than zinc (Zn), so Cu cannot displace Zn from \(\mathrm{ZnSO_4}\). In contrast, in option A, zinc is more reactive than copper and therefore displaces Cu from \(\mathrm{CuSO_4}\).
Frequently asked questions
What is the correct answer to this question?
\(\mathrm{Cu + ZnSO_4 \rightarrow \text{no reaction}}\)
Why is this the correct answer?
A displacement reaction occurs only when the free metal is more reactive than the metal present in the salt solution. Copper (Cu) is less reactive than zinc (Zn), so Cu cannot displace Zn from \(\mathrm{ZnSO_4}\). In contrast, in option A, zinc is more reactive than copper and therefore displaces Cu from \(\mathrm{CuSO_4}\).
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.
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