Question

Assertion (A): When barium chloride solution is added to sodium sulphate solution, then a white precipitate of barium sulphate is formed along with sodium chloride solution.

Reason (R): The above precipitation reaction is an example of displacement reaction.

Options

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

A is true but R is false.

Explanation:

Assertion (A) is true because a chemical exchange takes place between barium chloride and sodium sulphate to produce an insoluble white precipitate of barium sulphate along with sodium chloride solution. However, Reason (R) is false because this chemical process is a double-displacement reaction, not a single-displacement reaction, since both reacting compounds simultaneously exchange their ionic partners.