What do you mean by precipitation reaction?
Answers
For example, when barium chloride reacts with sodium sulphate, barium sulphate precipitate is formed.
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◾◾here is your answer...
✒ PRECIPITATION REACTION:-- A reaction in which an insoluble solid (also called precipitate) is formed is called a precipitation reaction.
✒SOME EXAMPLES OF THAT TYPE REACTION:--
1) Na2CO3 (aq) + CaCl2 (aq) ---> CaCO4 (s) + 2NaCl (aq)
Here,
#Na2CO3 = sodium carbonate
#CaCl2= calcium chloride
#CaCO4= calcium carbonate
#NaCl= sodium chloride
--»» In this reaction, calcium carbonate is a precipitate.
2) Na2SO4(aq) + BaCl2(aq) --> BaSO4(s) + 2NaCl(aq)
Here,
# Na2SO4= sodium sulphate
# BaCl2= barium chloride
# BaSO4= barium sulphate
# NaCl= sodium chloride
--»» In this reaction, barium sulphate is obtained as a precipitate.
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I hope, this will help you.☺
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