Question

What product is formed when \[\ce{R - C ≡ N}\] is hydrolysed?

Options

• \[\begin{array}{cc}
  \ce{R - C - OH}\\
  ||\phantom{..}\\
  \ce{O}\phantom{..}
  \end{array}\]

• \[\begin{array}{cc}
  \ce{R - C - H}\\
  ||\\
  \ce{O}
  \end{array}\]

• \[\begin{array}{cc}
  \ce{R - C - R}\\
  ||\\
  \ce{O}
  \end{array}\]

• \[\begin{array}{cc}
  \ce{R - C - O - R}\\
  ||\phantom{.....}\\
  \ce{O}\phantom{.....}
  \end{array}\]

Answer 1

\[\begin{array}{cc}
\ce{R - C - OH}\\
||\phantom{..}\\
\ce{O}\phantom{..}
\end{array}\]

Explanation:

\[\begin{array}{cc}
\phantom{..................}\ce{OH}\phantom{...............}\ce{O}\phantom{................}\ce{O}\phantom{.}\\
\phantom{.............................}|\phantom{.................}||\phantom{.................}||\phantom{...........}\\
\ce{\underset{Alkyl cyanide}{R - C ≡ N} + H - OH -> R - C = NH -> R - C - NH2 ->[H^+] \underset{Carboxylic acid}{R - C - OH} + NH3}
\end{array}\]