MCQs – Chemical Reactions and Equations class 10 science

Review

Question:  Which metal is displaced when lead is put in the solution of copper chloride?

Correct Answer

Copper is displaced when lead is put in the solution of copper chloride (CuCl₂). In this reaction lead chloride (PbCl₂) and copper metal are formed.

Pb(s) + CuCl₂(aq) → PbCl₂(aq) + Cu(s)

Since, here lead displaces copper from copper chloride solution, hence it is a Displacement Reaction.

In a Displacement Reaction more reactive metal displaces less reactive metal from its solution.

In the given reaction lead (Pb) is more reactive than that of copper, hence lead replaces copper from the solution of copper chloride.

If less reactive metal is put in the solution of more reactive metal, then no reaction will take place.