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Question

When sodium sulphate solution is added to barium chloride, a white precipitate is formed. Write the chemical name of precipitate obtained and type of chemical reaction involved in this process.

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Solution

Double displacement reactions generally take place in aqueous solutions in which the ions precipitate and there is an exchange of ions. On mixing a solution of barium chloride with sodium sulphate, a white precipitate of barium sulphate is immediately formed. These reactions are ionic in nature.

When sodium sulphate solution is added to barium chloride, a white precipitate is formed and this white precipitate is known as barium sulfate which settles down in form of insoluble precipitate.

Reaction involved =

Na2SO4+BaCl22NaCl+BaSO4

(sodiumsulfate)(bariumchloride)(sodiumchloride)(bariumsulfate)



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