Name the white precipitate formed in the reaction of sodium sulphate and barium chloride.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Barium sulphate.
When sodium sulfate (Na₂SO₄) reacts with barium chloride (BaCl₂), a white precipitate of barium sulfate (BaSO₄) is formed. This reaction is a classic example of a double displacement reaction, where the sulfate ions (SO₄²⁻) from sodium sulfate combine with barium ions (Ba²⁺) from barium chloride. The resulting barium sulfate is insoluble in water, leading to the formation of a distinct white precipitate. The overall balanced chemical equation for this reaction is:
Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)