Alcohols Phenols And Ethers Question 79

Question: Compound A reacts with $ PCl_5 $ to give B which on treatment with KCN followed by hydrolysis gave propionic acid. What is A and B respectively

[EAMCET 1998]

Options:

A) $ C_3H_8 $ and $ C_3H_7Cl $

B) $ C_2H_6 $ and $ C_2H_5Cl $

C) $ C_2H_5Cl $ and $ C_2H_5Cl $

D) $ C_2H_5OH $ and $ C_2H_5Cl $

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Answer:

Correct Answer: D

Solution:

$ \underset{\text{(A)}}{\mathop{C_2H_5OH}}+PCl_5\to \underset{\text{(B)}}{\mathop{C_2H_5Cl}}+POCl_3+HCl $

$ \underset{\text{(B)}}{\mathop{C_2H_5Cl}}+KCN\to C_2H_5CN+KCl $