Question

Which of the following combination of metal and compound will undergo a displacement reaction?

• A. Sodium chloride solution and copper
• B. Sodium chloride solution and magnesium
• C. Ferrous sulphate solution and silver
• D. Silver nitrate solution and copper

Answer 1

The correct option is D

Silver nitrate solution and copper

In a displacement reaction the metals of high reactivity displaces metals of low reactivity from their salt solution.

Silver nitrate and copper metal undergo displacement reaction as copper is more reactive than silver. Hence, it displaces silver to form copper nitrate. The reaction involved is:

$\text{Cu(s)}+2{\text{AgNO}}_3\text{(aq)}\to {\text{Cu(NO}}_3{)}_2\text{(aq)}+2\text{Ag(s)}$