Question

In the reaction sequence, $C_2{H}_{5}Cl+KCN\stackrel{C_2{H}_{5}OH}{⟶}X\stackrel{H_3{O}^{⨁}}{\underset{\Delta }{⟶}}Y$, what is the molecular formula of Y?

• A. $C_3{H}_6{O}_2$
• B. $C_3{H}_{5}N$
• C. $C_2{H}_4{O}_2$
• D. $C_2{H}_{6}O$

Answer 1

Answer: (A)

$C_3{H}_6{O}_2$

$C_2{H}_{5}Cl+KCN\stackrel{C_2{H}_{5}OH}{⟶}\underset{\left(X\right)}{C_2{H}_{5}CN}+KCl$

$C_2{H}_{5}CN\stackrel{H_3{O}^{+},2H_{2}O}{\underset{\Delta }{\to }}\underset{\underset{\underset{\left(Y\right)}{}\left(C_3{H}_6{O}_2\right)}{or}}{C_2{H}_{5}COOH}+N{H}_3$.