Which of the following products are formed when sodium sulphate reacts with barium chloride?
1
White precipitate of BaSO₄ and 2NaCl (aq)
2
Yellow precipitate of BaSO₄ and 2NaCl (aq)
3
Brown precipitate of BaSO₄ and 2NaCl (aq)
4
Black precipitate of BaSO₄ and 2NaCl (aq)