How will you obtain?

(a) Magnesium oxide from magnesium.

(b) Silver chloride from silver nitrate.

(c) Nitrogen dioxide from lead nitrate.

(d) Zinc chloride from zinc.

(e) Ammonia from nitrogen.

Also give balanced equations for the reactions.

(a) When magnesium reacts with oxygen it produces magnesium oxide.

2Mg + O₂ ⟶ 2MgO

(b) When silver nitrate reacts with hydrochloric acid silver chloride is formed.

AgNO₃ (aq) + HCl ⟶ AgCl↓ + HNO₃

(c) When lead nitrate is heated strongly, a reddish brown gas nitrogen dioxide is produced.

2Pb(NO₃)₂ $\xrightarrow{\enspace\Delta\enspace}$ 2PbO + 4NO₂ (g) + O₂ (g)

(d) Zinc reacts with dilute HCl to produce zinc chloride.

Zn + 2HCl (dil.) ⟶ ZnCl₂ + H₂ (g)

(e) When nitrogen gas reacts with hydrogen gas in presence of finely divided iron as catalyst, subjected to pressure of 200-900 atm and temperature of about 450°C, ammonia gas is produced.

     $\text{N}$2 + 3\text{H}2 \xrightleftharpoons[\text{200-900 atmos.}]{\text{Fe catalyst/450\degree C }} \text{2NH}_3