a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt?

b) Draw the canonical structures of ozone molecule

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Solution

(a) $S O_{2} + F e^{3 +} + 2 H_{2} O \to 2 F e^{3 +} + S O_{4}^{2 -} + 4 H^{+}$

$S O_{2}$ $behaves as reducing agent. It converts$ $F e^{3 +} t o F e^{2 +}$

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