Question

what do you mean by precipitation reaction​

Answer 1

The chemical reaction in which two soluble salts in aqueous solution combine and one of the product is insoluble salt called precipitate is called precipitation reaction.

Ex- Na2SO4 + BaCl2 -------> BaSO4 + 2NaCl

Hope it helps.

Answer 2

$<v>$

A reaction in which an insoluble solid (called precipitate) is formed is called a precipitation reaction.For Example:

Na2CO3 (aq) + CaCl2 (aq) → CaCO3 (s) + 2NaCl (aq)

Sodium Carbonate + Calcium Chloride → Calcium Carbonate + Sodium Chloride

In this reaction, calcium carbonate is obtained as a precipitate. Hence, it is a precipitation reaction.