Question

Ethylene chlorohydrin is the product of following reaction:
(A) $C{H_2} = C{H_2} + HOCl$
(B) $C{H_2} = C{H_2} + {H_2}$
(C) $C{H_2} = C{H_2} + C{l_2}$
(D) $C{H_2} = C{H_2} + HOBr$

Answer 1

Hint : The chemical name of ethylene chlorohydrin is $2$ -chloroethanol. The chemical formula of ethylene chlorohydrin is ${C_2}{H_5}ClO$ . It gives up ${H^ + }$ and $C{l^ - }$ , as a reaction with sodium hydroxide.

Complete Step By Step Answer:
A. When chlorine gas is added in water, hypochlorous acid is formed. The resulting chemical
reaction is as follows,
$C{l_2} + {H_2}O \to HCl + HOCl$ .
This Hypochlorous acid ( $HOCl$ ) reacts with ethylene and forms ethylene chlorohydrin. The resulting chemical reaction is as follows,
$C{H_2} = C{H_2}\xrightarrow{{HOCl}}{C_2}{H_5}ClO$
B. Ethene reacts with hydrogen in the presence of a nickel catalyst at a temperature of about ${150^0}$ C, Ethane is produced. The resulting chemical reaction is as follows,
$C{H_2} = C{H_2} + {H_2}\xrightarrow{{Nickel}}{C_2}{H_6}$
C.Ethylene reacts with dry chlorine gas, which forms ethylene dichloride. The resulting
chemical reaction is as follows,
$C{H_2} = C{H_2} + C{l_2} \to {C_2}{H_4}C{l_2}$
D. Hypobromous acid ( $HOBr$ ) reacts with ethylene and forms Bromoethanol. The resulting
chemical reaction is as follows,
$C{H_2} = C{H_2}\xrightarrow{{HOBr}}{C_2}{H_5}BrO$
Hence the correct option is A.

Additional information:
Chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances. Substances are either chemical elements or compounds.

Note :
Ethylene chlorohydrin readily dissolves in many organic substances like cellulose acetate and ethyl cellulose. Also note that ethylene reacts with dry $HCl$ gas, ethyl chloride will form. But it is used as a solvent and has extremely limited access due to its toxicity.