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Amongst the following compounds, the one(s) which readily react with ethanolic KCN.
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Verified Answer
The correct answers are:
Ethyl chioride, Benzaldehyde
(a) Ethyl chioride gives ethyl cyanide, when it reacts with KCN (ethanolic).
$$
\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{Cl}+\mathrm{KCN} \stackrel{\text { EThande }}{\longrightarrow} \mathrm{C}_{2}\mathrm{H}_{\mathrm{s}}-\mathrm{CN}
$$
(b) It does not react with KCN.
(c) Benzaldehyde : KCN gives HCN in alcoholic medium and HCN gives cyanohydrin with benzaldehyde.
$$
\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{Cl}+\mathrm{KCN} \stackrel{\text { EThande }}{\longrightarrow} \mathrm{C}_{2}\mathrm{H}_{\mathrm{s}}-\mathrm{CN}
$$
(b) It does not react with KCN.
(c) Benzaldehyde : KCN gives HCN in alcoholic medium and HCN gives cyanohydrin with benzaldehyde.
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