Question

Identify the following reaction .

${\mathrm{AgNO}}_3+\mathrm{HCl}\to \mathrm{AgCl}+{\mathrm{HNO}}_3$

Answer 1

Double displacement reaction and also Precipitation reaction.

Definition of double displacement reaction

It is a type of displacement reaction in which products obtained by interchanging the ions of reactants. Usually an insoluble substance is formed as a result of this reaction. So it is also called precipitation reaction.

AB+ CD $\to$AD+ CB

• ${\mathrm{AgNO}}_3\left(\mathrm{aq}\right)+\mathrm{HCl}\left(\mathrm{aq}\right)\to \mathrm{AgCl}\left(\mathrm{s}\right)+{\mathrm{HNO}}_3\left(\mathrm{aq}\right)$
• In the above reaction, the products obtained by interchanging the Silver ion (Ag⁺) and Hydrogen ion(H⁺) of reactant.
• As a result of this reaction Silver chloride(AgCl) is precipitated.
• That is when Silver nitrate react with Hydrogen chloride, Silver chloride is precipitated as a result of exchange of Silver ion (Ag⁺) and Hydrogen ion(H⁺).
• Hence it is a double displacement reaction and also Precipitation reaction.