1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion textCHC textl text3 is stored in closed dark coloured bottles completely filled so that air is kept out. Reason text1 texto amines on reaction with ethanolic KOH and textCHC textl3 give carbylamine.

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Q. Assertion $ \text{CHC}{{\text{l}}_{\text{3}}} $ is stored in closed dark coloured bottles completely filled so that air is kept out. Reason $ {{\text{1}}^{\text{o}}} $ amines on reaction with ethanolic KOH and $ \text{CHC}{{\text{l}}_{3}} $ give carbylamine.

VMMC MedicalVMMC Medical 2010

Solution:

$ \text{CHC}{{\text{l}}_{3}} $ is stored in dark colored bottles and properly stopped to keep out air because in presence of air or light, it slowly oxidized to poisonous gas phosgene (carbonyl chloride). $ CHC{{l}_{3}}+\frac{1}{2}{{O}_{2}}\xrightarrow[light]{Air\,or}\underset{(phosgene)}{\mathop{COC{{l}_{2}}}}\,+HCl $ $ RN{{H}_{2}}+alc.KOH+CHC{{l}_{3}}\xrightarrow{{}}\underset{\text{carbylamine}}{\mathop{RNC}}\, $ Hence, both Assertion and Reason are true but Reason is not the correct explanation of Assertion.