What is formation of a precipitate

1.	What is formation of a precipitate
Answer» The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reactionNa2SO4 + BaCl2 (aq) --> BaSO4 (s) + 2 NaCl(aq)In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water.

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