Question

What is a displacement reaction? Give one example.

Answer 1

A chemical reaction in which a more reactive element displaces a less reactive element from its compound is called a displacement reaction.

For example, when zinc (Zn) reacts with copper sulphate
($CuS{O}_4$)

, zinc replaces copper being more reactive than copper. $\mathrm{Zn}+{\mathrm{CuSO}}_4\to {\mathrm{ZnSO}}_4+\mathrm{Cu}$