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.

Explanation

### Step-by-Step Text Solution

#### (i) Reaction of Barium Chloride and Sodium Sulphate

1. **Identify the reactants and products**:
- Reactants: Barium chloride (BaCl₂) and Sodium sulfate (Na₂SO₄).
- Products: Barium sulfate (BaSO₄) and Sodium chloride (NaCl).

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