Question

4. What do you mean by a precipitation reaction

Answer 1

The reaction in which precipitates are formed called as precipitation reaction
Barium chloride+sodium sulphate=Barium sulphate+ sodium chloride

Answer 2

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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.☺

Thank you______❤

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