Balance the following chemical reactions:

1. Pb(NO₃)₂ → PbO + NO₂ + O₂

2. CH₄ + O₂ → CO₂ + H₂O

3. Cu + AgNO₃ → Cu(NO₃)₂ + Ag

4. MnO₂ + HCl → MnCl₂ + H₂O + Cl₂

5. Pb(NO₃)₂ + NaCl → PbCl₂ + NaNO₃

Write the chemical reaction and balance it.

1. A solution of potassium chloride when mixed with silver nitrate solution, an insoluble

white substance is formed.

2. Copper sulphate on treatment with potassium iodide precipitates cuprous iodide(Cu₂l₂),

liberates iodine gas and also forms potassium sulphate.