Question

What are $X$ and $Y$ in the following reaction sequence?
$C_2H_5OH \xrightarrow{Cl_2}(X) \xrightarrow{Cl_2} Y$.

• A. $C_2H_5Cl, CH_3CHO $
• B. $ CH_3CHO, CH_3CO_2H $
• C. $CH_3CHO, CCl_3CHO $
• D. $C_2H_5Cl, CCl_3CHO $

Answer 1

Answer: (C)

At first on reaction with alcohol, $Cl _{2}$ with act as oxidising agent and convert $C _{2} H _{5} O H$ into $CH _{3}- CHO ( X )$ In the second step chlorination will take place and $3 -Hs$ will be replaced by $3 Cl$ and $Y$ will be $Cl _{3} \cdot C - CHO$
$C _{2} H _{5} OH + Cl _{2} \rightarrow CH _{3}- CHO ( x )$. [Oxidation]
$CH _{3}-CHO + Cl _{2} \rightarrow Cl _{3} C-CHO$ [Chlorination]