Complete the following reactions: (i) C$_6$H$_5$N$_2$Cl + KI → (ii) (the reaction shown in the figure)

(i) C₆H₅N₂Cl + KI → C₆H₅I + N₂ + KCl (iodobenzene). (ii) The displayed diazonium conversion proceeds with loss of N₂ to give the substituted arene shown.

CBSE Class 12 · 2008 · All India; also Delhi 2009 · Compounds Containing NitrogenShort Answer

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Complete the following reactions:
(i) C

_{6}

_{5}

_{2}

Cl + KI →
(ii) (the reaction shown in the figure)

Structure Reaction (ii) to complete — Reaction (ii) to complete

Solution

(i) Warming benzenediazonium chloride with potassium iodide replaces the diazo group by iodine:

C_{6} H_{5} N_{2}^{+} C l^{-} + KI \to C_{6} H_{5} I + N_{2} ↑ + KCl

(ii) In the figure's reaction the Ar–N

_{2}^{+}

group is likewise displaced with evolution of N

_{2}

, giving the halogen-substituted arene drawn as the product (diazonium salts lose N

_{2}

in all such replacements).

CBSE Class 12 Board · 2008 · All India; also Delhi 2009 · Subjective

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CBSE Class 12 · 2008 · All India; also Delhi 2009 · Compounds Containing NitrogenShort Answer

Solution

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