Question

Rationalise the given statements and give chemical reactions:
(i) Lead (II) chloride reacts with $Cl_{2}$ to give $PbCl_{4}$.
(ii) Lead (IV) chloride is highly unstable towards heat.
(iii) Lead is known not to form an iodide, $PbI_{4}$.

Answer 1

"(a) If the "decomposition reaction" is carried out in the "presence of heat" is called "thermal decomposition" reaction. Calcium carbonate is called quick lime. "Calcium carbonate" is heated heavily to form "calcium oxide" and "carbon dioxide" until it is thermally decomposed. Calcium oxide is "dissolved in water" to form "calcium hydroxide" (limestone). This causes a "milky suspension" of "calcium carbonate" to bubble carbon dioxide.

(b) If the top of the Chimney of the kiln was closed, very low amount of carbonate is formed because thermal decomposition reaction is carried out in presence of oxygen."