Explain two methods of preparation of ethylene dichloride.

1.	Explain two methods of preparation of ethylene dichloride.
Answer» Solution :(i) ADDITION of `Cl_2` to ETHYLENE : `UNDERSET("Ethylene")(CH_2=CH_2) + Cl_2 to underset("Ethylene DICHLORIDE ")(underset(Cl)underset(\|)CH_2-underset(Cl)underset(\|)CH_2)` (ii) Action of `PCl_5` on Ethylene GLYCOL : `underset("Ethylene glycol ")(underset(OH)underset(\|)(CH_2) - underset(OH)underset(\|)(CH_2))+ 2PCl to underset("Ethylene dichloride ")(underset(Cl)underset(\|)CH_2-underset(Cl)underset(\|)CH_2) + 2POCl_3 + 2HCl`

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