Question

A white precipitate can be obtained by adding dilute sulphuric acid to ______.

Options

• CuSO₄ solution

• NaCl solution

• BaCl₂ solution

• Na₂SO₄ solution

Answer 1

A white precipitate can be obtained by adding dilute sulphuric acid to BaCl₂ solution.

Explanation:

When dilute sulphuric acid (H₂SO₄) reacts with barium chloride (BaCl₂), a double-displacement reaction occurs, forming an insoluble white precipitate of barium sulphate (BaSO₄). The balanced equation is:

\[\ce{BaCl2_{(aq)} + H2SO4_{(aq)} -> BaSO4_{(s)}\downarrow + 2HCl_{(aq)}}\]