Arrange the following amines in the order of | vedclass

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(A) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom.Aliphatic amines (like $CH_3NH_2$) are more

Vedclass · Accepted Answer

$p$-nitroaniline < aniline < $p$-methoxyaniline < $CH_3NH_2$

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(A) The basicity of amines depends on the availability of the lone pair of electrons on the nitrogen atom.Aliphatic amines (like $CH_3NH_2$) are more basic than aromatic amines because the lone pair on the nitrogen atom in aromatic amines is involved in resonance with the benzene ring,making it less available for protonation.Among aromatic amines,electron-donating groups (like $-OCH_3$) increase the electron density on the nitrogen atom,thereby increasing basicity.Electron-withdrawing groups (like $-NO_2$) decrease the electron density on the nitrogen atom,thereby decreasing basicity.Therefore,the order of increasing basicity is: $p$-nitroaniline < aniline < $p$-methoxyaniline < $CH_3NH_2$.

Arrange the following amines in the order of increasing basicity.

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