Identify the compounds [A], [B] and [C] in the following reactions:
(i)[1.5]
$\text{CH}_3\text{CH}_2\text{Br} \xrightarrow{\text{KCN}} [\text{A}] \xrightarrow{\text{LiAlH}_4} [\text{B}] \xrightarrow{\text{HNO}_2} [\text{C}]$
(ii)[1.5]
$\text{CH}_3\text{CH}_2\text{COOH} \xrightarrow{\text{NH}_3} [\text{A}] \xrightarrow{\Delta} [\text{B}] \xrightarrow{\text{Br}_2/\text{KOH}} [\text{C}]$
Answer
Answer (i)
AIWritten by AI (gemini) - it can contain mistakes.
[A]: Propanenitrile (ethyl cyanide), $\text{CH}_3\text{CH}_2\text{CN}$
[B]: Propan-1-amine (propylamine), $\text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2$
[C]: Propan-1-ol, $\text{CH}_3\text{CH}_2\text{CH}_2\text{OH}$
Answer (ii)
AIWritten by AI (gemini) - it can contain mistakes.
[A]: Ammonium propionate, $\text{CH}_3\text{CH}_2\text{COONH}_4$
[B]: Propanamide, $\text{CH}_3\text{CH}_2\text{CONH}_2$
[C]: Ethanamine (ethylamine), $\text{CH}_3\text{CH}_2\text{NH}_2$
From ISC 2026 Chemistry Paper 1, question 18.