Question

When barium chloride and sodium sulphate are mixed together the white precipitate is formed. What is this precipitate and why is formed?

Answer 1

When sodium sulphate reacts with barium chloride, a double displacement reaction takes place and the new products formed are barium sulphate and sodium chloride. The white precipitate is of barium sulphate. The reaction is as follows:

BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq)