Question

In the preparation of $ CHC{{l}_{3}} $ ​ from ethanol and moist bleaching powder, the latter provides:
(A) $ C{{H}_{3}}CHO $
(B) $ HCl $
(C) Both $ C{{H}_{3}}CHO,HCl $
(D) CalciumFormate.

Answer 1

Hint: Chloroform or trichloromethane is a colourless organic compound having the chemical formula as with strong-smelling liquid. It is a very powerful anaesthetic when inhaled or ingested.

Complete step by step solution:
Chloroform is a dense liquid that is chiefly produced on a large scale as a precursor to polytetrafluoroethylene (PTFE). Chloroform is a powerful euphoriant, a substance that gives the intense feeling of pleasure, excitement, and happiness. It is also used as a medication that inhibits anxiety. It also works like a sedative or tranquillizer which reduces irritability by depressing the central nervous system.
Chloroform is known by many names like Methane trichloride, Methyl trichloride, Methenyl trichloride, TCM, $ Freon-20 $ , and $ Refrigerant-20 $ . -The chloroform molecule exhibits tetrahedral geometry. The chloroform molecule exhibits tetrahedral geometry.
Chloroform when orally ingested, inhaled, or on dermal exposure can cause sores as a result of defatting. The accidental splashing of chloroform into the eyes is found to cause severe irritations. Chloroform is also found to be carcinogenic to humans.
The bleaching powder provides chlorine as per the reaction $ CaOC{{l}_{2}}+{{H}_{2}}O\to Ca{{\left( OH \right)}_{2}}+C{{l}_{2}} $
Chlorine oxidized ethanol to acetaldehyde. $ C{{H}_{3}}C{{H}_{2}}OH+C{{l}_{2}}\to C{{H}_{3}}CHO+2HCl $
Acetaldehyde formed undergoes haloform reaction to form chloroform. $ $
 $ 2CH_{3}^{{}}CHO+3Ca\left( OCl \right)2\to {{\left( HCOO \right)}_{2}}Ca+2CHC{{l}_{3}}+2Ca{{\left( OH \right)}_{2}} $
Therefore, Correct answer is option C, i.e. Both $ C{{H}_{3}}CHO,HCl $

Note:
While handling chloroform, one must follow safety procedures. Chloroform is often formed as a by-product during the process of water chlorination along with a range of other disinfection byproducts and thus is present in municipal tap water and swimming pools.