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 solution of Sodium chloride. ii) Sodium hydroxide solution in water reacts with the hydrochloric acid solution to produce Sodium chloride solution and water.

Solution:

1. i) BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
2. ii) NaOH + HCl → NaCl + H₂O

In-text questions set 2 Page number – 10

1. A solution of a substance, ‘X,’ is used for whitewashing.

(i) Name the substance ‘X’ and write its formula.

(ii) Write the reaction of the substance ‘X’ named in (i) above with water.

Solution:

1. i) The substance ‘X’ which is used in whitewashing is quick lime or Calcium Oxideand its formula is CaO.
2. ii) CaO + H₂O → Ca(OH)₂