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(a) How will you distinguish between the following pairs of compounds :

(i) Aniline and Ethanamine

(ii) Aniline and N-methylaniline

(b) Arrange the following compounds in decreasing order of their boiling points :  

Butanol, Butanamine, Butane

 

 
 
 
 
 

Answers (1)

a) (i) Aniline and Ethanamine can be distinguished by Adding Ice cold (NaNO2 + HCl) followed by phenol or β-Naphthol to both the compounds. Aniline forms orange red dye while ethylamine doesn’t.

ii) Aniline and N-methylaniline can be distinguished by Adding CHCl3 and KOH (alc.) to both the compounds. Aniline gives foul smelling isocyanide while N-Methylaniline doesn’t.

b) Butanol > Butanmine > Butane

 

 

Posted by

Safeer PP

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