Write the balanced chemical equations for the following reactions:

1. Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide gas.
2. Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (CuI) liberates iodine gas and also forms potassium sulphate.

Q. Copper sulphate on treatment with potassium iodide precipitates cuprous iodide $\left(CuI\right)$, liberates iodine gas and also forms potassium sulphate.

Q. Write balanced chemical equations for each of the following reactions
1. Carbon dioxide Marble dissolves in hydrochloric acid to give calcium chloride water and carbon dioxide
2. Silver nitrate reacts with copper to produce copper nitrate and silver metal
3. Carbon dioxide gas is passed over lime water to form a precipitate of calcium carbonate
4. Aluminium Sulphate acts with Sodium Hydroxide to form precipitate of aluminium hydroxide and the solution of sodium sulphate
5. Barium Chloride solution reacts with sulphuric acid to form precipitate of Barium sulphate and solution of hydrochloric acid.