Step-by-step explanation:
A chemical reaction where two chemical compounds exchange ions with each other is called a double displacement reaction.
Also, when an insoluble salt is formed due to chemical reaction between two chemical compounds is called a precipitation reaction.
For example,
![NaCl(aq) + AgNO_3(aq) \rightarrow NaNO_3(aq) + AgCl(s)](https://img.qammunity.org/2022/formulas/chemistry/high-school/du0t8drwdvokvuxn8buhxz9wn41qgzkib9.png)
Here, ions are exchanged between the compounds
and
. Also,
is the precipitate formed.