A) \[AgN{{O}_{3}}+HCl\]
B) \[HCl\]
C) \[AgN{{O}_{3}}\]
D) none of these
Correct Answer: C
Solution :
Chloroform is tested by \[AgN{{O}_{3}}\]before its use as anaesthetic because chloroform is oxidized by atmospheric air to a poisonous gas phosgene (carbonyl chloride) on standing for sometime. In this reaction, it also form \[HCl\] which give white ppt. with \[AgN{{O}_{3}}\]. Hence, chloroform is used only when it does not form white ppt. with \[AgN{{O}_{3}}\]. \[CHC{{l}_{3}}+AgN{{O}_{3}}\xrightarrow{{}}x\text{ }No\text{ }reaction\] \[CHC{{l}_{3}}+O\xrightarrow{{}}\underset{Poisonous}{\mathop{COC{{l}_{2}}}}\,+HCl\] \[HCl+AgN{{O}_{3}}\xrightarrow{{}}\underset{White}{\mathop{AgCl}}\,\downarrow +HN{{O}_{3}}\]
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