Question

Complete the following equation:

${\mathrm{AgNO}}_3+\mathrm{HCl}\stackrel{}{\to }\mathrm{\_\_\_\_\_\_}$

Answer 1

Double-displacement reaction:

• It is a chemical reaction in which two compounds in their aqueous solutions react to form two new compounds by the mutual exchange of their radicals.
• In general double displacement reaction is represented as
• $\mathrm{AB}+\mathrm{CD}\stackrel{}{\to }\mathrm{AD}+\mathrm{BC}$
• For example silver nitrate$\left({\mathrm{AgNO}}_3\right)$ reacts with hydrochloric acid$\left(\mathrm{HCl}\right)$, they undergo a mutual change of their radicals and resulting in the formation of silver chloride$\left(\mathrm{AgCl}\right)$ as precipitate and nitric acid$\left({\mathrm{HNO}}_3\right)$.
• $\underset{\mathrm{silver}\mathrm{nitrate}}{{\mathrm{AgNO}}_3\left(\mathrm{aq}\right)}+\underset{\mathrm{hydrochloric}\mathrm{acid}}{\mathrm{HCl}\left(\mathrm{aq}\right)}\stackrel{}{\to }\underset{\mathrm{silver}\mathrm{chloride}}{\mathrm{AgCl}\left(\mathrm{s}\right)⇣}+\underset{\mathrm{nitric}\mathrm{acid}}{{\mathrm{HNO}}_3\left(\mathrm{aq}\right)}$
• The above reaction is also a precipitate reaction