Write the structures of {\A}, {\B} and {\C} in the following : (a) {\C}_6 {\H}_5- {\CONH}_2 \stackrel{ {\Br}{───────▸}_2 \/ {\aq} \cdot {\KOH}} {\A} {───────▸} _{0-5^{\circ} }^{ {\NaNO}_2+ {\HCl}} {\B} \stackrel{ {\KI}{─────▸}} {\C}. (b) {\CH}_3- {\Cl} \stackrel{\text{ KCN }{─────▸}} {\A} \stackrel{ {\LiAIH}{─────▸}_4} {\B} \stackrel{ {\CHCl}{────────▸}_3+\text{ alc.KOH }} {\C}.

CBSE Class 12 Chemistry 2016 Delhi Set 1 Solved Paper

Question : 19 of 26

Marks: +1, -0

Write the structures of

{\A}, {\B}

and

{\C}

in the following :
(a)

{\C}_6 {\H}_5- {\CONH}_2 \ {───────▸}↖{ {\Br}_2 \/ {\aq} ⋅ {\KOH}}

{\A} \ {───────▸} ↙{0-5^{∘} }↖{ {\NaNO}_2+ {\HCl}} {\B} \ {─────▸}↖{ {\KI}} {\C}

.
(b)

{\CH}_3- {\Cl} \ {─────▸}↖{\;\text " KCN "\;} {\A} \ {─────▸}↖{ {\LiAIH}_4}

{\B} \ {────────▸}↖{ {\CHCl}_3+\;\text " alc.KOH "\;} {\C}

Solution:

(a)

{\C}_6 {\H}_5- {\CONH}_2  \ {───────▸}↖{ {\Br}_2 \/ {\aq} ⋅ {\KOH}}

{\ {\C}_6 {\H}_5 {\NH}_2[ {\A}] } \ {───────▸} ↖{ {\NaNO}_2+ {\HCl}} { {\C}_6 {\H}_5 {\N_2^{+}\Cl} ^{-}[ {\B}] }

\ {─────▸}↖{ {\KI}} {{\C}_6 {\H}_5 {\I}[{\C}]}

.
(b)

{\CH}_3- {\Cl}  \ {─────▸}↖{\;\text " KCN "\;} {\CH_3\CN[\A]} \ {─────▸}↖{ {\LiAIH}_4}

{\CH_3\CH_2\NH_2[\B]}

\ {────────▸}↖{ {\CHCl}_3+\;\text " KOH "\;} ↙{\Δ} {\CH_3\CH_2\NC[\C]}

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