c
\(CH_3CHO +HCN \to \)  \(\begin{array}{*{20}{c}}
 \,\,\,\,\,\,\,\,\, {OH} \\ 
 \,\,\,\,\,\, | \\ 
  {C{H_3} - C - H} \\ 
  \,\,\,\,\,\,| \\ 
  \,\,\,\,\,\,\,\,\,{CN} 
\end{array} \) \(\xrightarrow{{{H_2}O/{H^ + }}}\) \(\begin{array}{*{20}{c}}
  \,\,\,\,\,\,\,\,\,\,\,{OH} \\ 
\,\,\,\,\,\,\,\,\,  | \\ 
  {C{H_3} - C - H} \\ 
 \,\,\,\,\,\,\,\,\, | \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,COOH} 
\end{array}\)

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