Question

The precipitate formed in the above experiment is of......
A) NaCl
B) CaSO4
C) Na2Cl2
D) Na2Ca2

Answer 1

The precipitate formed in the above experiment is of B) CaSO4

[NaCl cannot be a precipitate since its a salt and dissolves in water, other two C) and D) are invalid options]

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Answer 2

The precipitate formed in the given experiment is of $\bold{\mathrm{CaSO}_{4}}$.

Option: B

Explanation:  

• When calcium chloride reacts with sodium sulphate, a white precipitate of calcium sulphate is formed. This is a type of double displacement reaction.  

• Sodium chloride can never form a precipitate since it dissolves in water. The calcium sulphate so formed is chalky white in colour and it does not dissolve in water.  

• There is a deposition of the salt at the bottom of the container .This reaction is widely used in industries for the manufacture of calcium sulphate.

Learn more about calcium sulphate

What is the commercial name of calcium sulphate hemihydrate

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