Question

What do you mean by precipitation reaction ?! give some examples​

Answer 1

Answer:

the reaction in which a solid substance formed called precipitate and this reaction is called precipitation reaction .

for ex :-

Na2So4 + Bacl2 --} BaSo4 + NaCl2

Answer 2

Answer:

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When two reactants in solution react and one or more of the products is insoluble or forms a precipitate, the reaction is called a precipitation reaction. For example, when a solution of iron chloride and ammonium hydroxide are mixed, a brown precipitate of iron hydroxide is formed.