Question: What is observed when a solution of sodium sulphate is added to a solution of barium chloride in a test tube? Write equation for the chemical reaction involved and name the type of reaction in this case. [CBSE, 2018]
Answer: Na₂SO₄ (aq.) + BaCl₂(aq.) → BaSO₄↓(s) + 2NaCl(aq.) Sodium Barium Barium Sodium sulphate chloride sulphate chloride It is an example of double displacement reaction.