# When sodium sulphate solution reacts with barium chloride solution, the solution after the reaction contains

(a) Barium sulphide

(b) Sodium chloride

(c) both a and b

(d) none of a and b

Solution:

The sodium sulphate reacts with barium chloride solution resulting in a double displacement reaction in which ions are exchanged. Hence sodium chloride and barium sulphate are formed. In water, the solution now consists only of sodium chloride. This is because barium sulphate does not dissolve in water whereas sodium chloride dissolves in water.

Hence option b is the answer.