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Amines

Question
CBSEENCH12009042
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Account for the following:
Methylamine in water reacts with ferric chloride to precipitate ferric hydroxide.

Solution

 

Due to the +I effect of -CH3 group, methylamine is more basic than water. therefore, in water methylamine produces OH- ions by accepting H+ ions form water.

Methyl amine is a base and dissolves in water to produce hydroxide ions.
CH3 NH2 + H2O ⇌ CH3 NH3⊕ + OHΘ
FeCl3 combines with OH- ions to give reddish brown precipitate of Fe (OH)3
FeCl3 + 3OH- → Fe(OH)3

 

Some More Questions From Amines Chapter

Classify the following amines as primary, secondary or tertiary:
(C2H5)2CHNH2

Classify the following amines as primary, secondary or tertiary:
(C2H5)2NH

Write structures of different isomeric amines corresponding to the molecular formula C4H11N.

Write IUPAC names of all the isomers.

What type of isomerism is exhibited by different pairs of amines?

How will you convert Benzene into N, N-dimethylaniline?

Arrange the following in increasing order of their basic strength:
C2H5NH2, C6H5NH2, NH3, C6H5CH2NH2 and (C2H5)2NH

Arrange the following in increasing order of their basic strength:
C2H5NH2, (C2H5)2NH, (C2H5)3N, C6H5NH2

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