(a) What happens when an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride?
(b) Write the balanced chemical equation for the reaction which takes place.
(c) State the physical conditions of reactants in which the reaction will not take place.
(d) Name the type of chemical reaction which occurs.
(e) Give one example of another reaction which is of the same type as the above reaction.
(a) What happens when an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride?
(b) Write the balanced chemical equation for the reaction which takes place.
(c) State the physical conditions of reactants in which the reaction will not take place.
(d) Name the type of chemical reaction which occurs.
(e) Give one example of another reaction which is of the same type as the above reaction.

(a) When barium chloride solution is mixed with sodium sulphate solution, a white barium sulphate precipitate forms along with the sodium chloride solution.

Na2SO4 + BaCl2 → BaSO4 + 2NaCl

(c) Solid sodium sulphate and Solid barium chloride

(d) Double displacement reaction, since sodium and barium exchange places to form two different compounds.

(e)A white precipitate of silver chloride and sodium nitrate solution is formed by mixing silver nitrate and sodium chloride solutions.