Question

what do you mean by precipitation reaction? write down any 2 reasons​

Answer 1

Answer:

Precipitation reactions occur when cations and anions in aqueous solution combine to form an insoluble ionic solid called a precipitate. A precipitate is a solid that forms out of solution.

A common example is that of the mixing of two clear solutions: Silver nitrate (AgNO3 ) and sodium chloride (NaCl):

AgNO3 (aq)+NaCl(aq)→AgCl(s)↓+NaNO3 (aq)

The precipitate forms because the solid (AgCl) is insoluble in water.

Answer 2

Answer:

The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reaction. In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water.

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