Account for the following:
pK_b of aniline is more than that of methylamine.

Solution

It is because, in aniline, the NH₂ group is attached directly to the benzene ring. It results in the unshared electron pair of the nitrogen atom to be in conjugation with the benzene ring and thus making it less available for protonation.
on another hand, in the case of methylamine (due to the +I effect of a methyl group), the electron density on the N-atom is increased. As a result, aniline is less basic than methylamine. Thus, pk_b of aniline is more than that of methylamine

Some More Questions From Amines Chapter

Classify the following amines as primary, secondary or tertiary:

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Amines

Account for the following:
pK_b of aniline is more than that of methylamine.

Some More Questions From Amines Chapter

Classify the following amines as primary, secondary or tertiary:

Classify the following amines as primary, secondary or tertiary:

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?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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Amines

Account for the following:pKb of aniline is more than that of methylamine.

Some More Questions From Amines Chapter

Classify the following amines as primary, secondary or tertiary:

Classify the following amines as primary, secondary or tertiary:

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?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Account for the following:
pK_b of aniline is more than that of methylamine.

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.