JEE Main Chemistry question

Ethylene dichloride can be prepared by the reaction of HCl and:

(A)Ethane
(B)Ethylene
(C)Acetylene
(D)Ethylene glycolCorrect

Answer: (D)

Solution

Ethylene dichloride (1,2-dichloroethane), , can be prepared by substituting both hydroxyl groups of ethylene glycol with chlorine using excess HCl: HOCH_2CH_2OH + 2HCl \rightarrow ClCH_2CH_2Cl + 2H_2O. (While addition to ethylene is the more common industrial route, among the given options

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Question ID VK-148171