Question 3:

Write a balanced chemical equation with state symbols for the following reactions.

(i) Solutions of barium chloride and sodium sulphate in water react to give insoluble

    barium sulphate and the solution of sodium chloride.

(ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in

     water) to produce sodium chloride solution and water.

Answer:

(i) BaCl_2(aq) + Na₂SO_4(aq)→BaSO_4(s) + 2NaCl_(aq)

(ii) NaOH_(aq) + HCl_(aq) → NaCl_(aq) + H₂O_(l)

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