A) chloroform
B) ethylene
C) carbon tetrachloride
D) none of the above
Correct Answer: A
Solution :
In this reaction, first ethanol is oxidised to ethanal and it gets chlorinated to give chloral. Chloral on reaction with \[Ca{{(OH)}_{2}}\] (obtained from bleaching powder), gives chloroform. \[CaOC{{l}_{2}}+{{H}_{2}}O\xrightarrow{{}}Ca{{(OH)}_{2}}+C{{l}_{2}}\] \[C{{l}_{2}}+{{H}_{2}}O\xrightarrow{{}}2HCl+O\] \[C{{H}_{3}}C{{H}_{2}}OH+O\xrightarrow{{}}\underset{\text{Ethanal}}{\mathop{C{{H}_{3}}CHO}}\,+{{H}_{2}}O\] \[C{{H}_{3}}CHO+3C{{l}_{2}}\xrightarrow{{}}\underset{\text{Chloral}}{\mathop{CC{{l}_{3}}CHO}}\,+3HCl\] \[2CC{{l}_{3}}CHO+Ca{{(OH)}_{2}}\xrightarrow{{}}\] \[2CHC{{l}_{3}}+{{(HCOO)}_{2}}Ca\]
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