Question

1. Sodium carbonate on reaction with hydrochloric acid in equal concentration gives sodium chloride and sodium hydrogen carbonate

2. Copper sulphate on treatment with potassium collide precipitate cupous iodide liberates iodine gas and also forms potassium sulphate
3. Sodium hydrogen carbonate on reaction with hydrochloride acid gives sodium chloride water and liberates carbon dioxide

Answer 1

Answer: a. Na₂CO₃ + HCl ⇒ 2NaCl(aq.) + HCO₃⁻

b. CuSO₄ + KI ⇒ CuI + K₂SO₄

c. NaHCO₃ + HCl ⇒ NaCl + CO₂ + H₂O