Question

Nitro chloroform is prepared by action of \[CHC{{l}_{3}}\]and __________
(A) Hot aq. \[KN{{O}_{3}}\]
(B) Hot aq. Solution of \[NaN{{O}_{2}}\]
(C) Hot conc. \[HN{{O}_{3}}\]
(D) Hot dil. \[HCl+aq.NaN{{O}_{2}}solution\]

Answer 1

Hint:chloroform is known as the organic compound which uses ideal anesthetic. Chloroform is said to be a colourless , sweet smelling dense liquid. It is also used as a lacrimator. Chloroform is a non flammable compound due to which it can be handled easier than ethanol.

Complete answer: the formation of nitro chloroform takes place by haloform reaction in which chloroform is reacted with hot concentrated \[HN{{O}_{3}}\] acid. The compound formed by the reaction is nitro chloroform called chloropicrin. In this process of nitration the hydrogen present in the chloroform is replaced by the nitro group when it is reacted with hot concentrated nitric acid. The compound formed is also known as trichloronitro methane. This liquid is used as war gas and insecticide. It is a poisonous liquid. the reaction for the formation of chloropicrin is the following
\[CHC{{l}_{3}}+HON{{O}_{2}}\to CC{{l}_{3}}N{{O}_{2}}+{{H}_{2}}O\]
Chloropicrin is known as PS also which is the chemical compound used as broad spectrum antimicrobial, herbicide, insecticide, fungicide, nematicide. Chloropicrin is injected into the soil for planting the crop in the soil so that the soil gets clean from the fungi, insects, and microbes. It is also used as stand alone treatment or get mixed with methyl bromide and 1,3 dichloropropene.

The correct answer is option (C).

Note:Chloroform forms sodium acetate with reaction with sodium hydroxide. On the oxidation of chloroform it forms phosgene. It is used in extraction of dissolvable fats, grease. It is also used as an indirect food additive in food packaging materials.