Distinguish between ch3nh2 and (ch3)2nh by suitable chemical test
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Answered by
37
(CH3)2NH reacts with nitrous acid to form an oily layer of N-nitrosamines, which are insoluble in aqueous mineral acids.
Whereas (CH3)3N reacts with nitrous acid to form soluble nitrite salts with no ppt.
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Answered by
16
Hey dear,
● Answer -
Carbylamine test
● Carbylamine test -
- Primary amines on treatment with chloroform and alc. potassium hydroxide to give foul smelling isocyanides.
- Methylamine reacts with chloroform and alc. potassium hydroxide to give foul smelling methyl isocyanide.
CH3-NH2 + CHCl3 + KOH ---> CH3-NC + 3KCl + 3H2
- Dimethylamine gives no reaction with chloroform and alc. potassium hydroxide.
(CH3)2NH + CHCl3 + KOH ---> NO REACTION
Hope this helps you...
● Answer -
Carbylamine test
● Carbylamine test -
- Primary amines on treatment with chloroform and alc. potassium hydroxide to give foul smelling isocyanides.
- Methylamine reacts with chloroform and alc. potassium hydroxide to give foul smelling methyl isocyanide.
CH3-NH2 + CHCl3 + KOH ---> CH3-NC + 3KCl + 3H2
- Dimethylamine gives no reaction with chloroform and alc. potassium hydroxide.
(CH3)2NH + CHCl3 + KOH ---> NO REACTION
Hope this helps you...
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