Question

What do you mean by precipitation reaction. .?

Answer 1

Here is your answer mate:-

Precipitation Reaction refers to those reactions in which a precipitate is formed. It's easy to understand in which way that all precipitation reactions are double displacement reactions but all double displacement are not precipitation precipitation reactions.

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Answer 2

$<i> A reaction in which an insoluble solid (called precipitate) is formed is called a precipitation reaction.For Example:</p><p>Na2CO3 (aq) + CaCl2 (aq) → CaCO3 (s) + 2NaCl (aq)</p><p>Sodium Carbonate + Calcium Chloride → Calcium Carbonate + Sodium Chloride</p><p>In this reaction, calcium carbonate is obtained as a precipitate. Hence, it is a precipitation reaction.$