What do you mean by a precipitation reaction? Explain by giving examples.

Question: What do you mean by a precipitation reaction? Explain by giving examples. 

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

For example:
NaCO₃(aq) + CaCl₂(aq) ⟶ CaCO₃(s) + 2NaCl(aq)

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

Another example of precipitation reaction is:

Na₂SO₄(aq) + BaCl₂(aq)  ⟶ BaSO₄(s) + NaCl(aq)

In this reaction, barium sulphate is obtained as a precipitate.

What do you mean by a precipitation reaction? Explain by giving examples.

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