Alcohols Phenols And Ethers Question 18

Question: Ethylene glycol reacts with excess of $ PCl_5 $ to give

[Kerala PMT 2004]

Options:

A) 1, 1-dichloroethane

B) 1, 2-dicholoroethane

C) 1, 1, 1-trichloroethane

D) 1, 1, 2, 2-tetrachloroethane

E) 2, 2-dichloroethane

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{\text{Ethylene glycol}}{\mathop{\underset{CH_2OH}{\mathop{\underset{|}{\mathop{C}}H_2OH}}}}+2PCl_5\to \underset{\text{1, 2 dichloroethane}}{\mathop{\underset{CH_2Cl}{\mathop{\underset{|}{\mathop{C}}H_2Cl}}+2POCl_3+2HCl}} $