Which of the following is the correct order f | vedclass

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(C) The basic strength of amines depends on the availability of the lone pair of electrons on the nitrogen atom.In the given compounds:$(I)$ is anilin

Vedclass · Accepted Answer

$III > II > I$

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(C) The basic strength of amines depends on the availability of the lone pair of electrons on the nitrogen atom.In the given compounds:$(I)$ is aniline $(C_6H_5NH_2)$.$(II)$ is $N$-methylaniline $(C_6H_5NHCH_3)$.$(III)$ is $N,N$-dimethylaniline $(C_6H_5N(CH_3)_2)$.All three compounds have the lone pair on the nitrogen atom involved in resonance with the benzene ring,which decreases their basicity compared to aliphatic amines.However,the presence of electron-donating methyl groups $(-CH_3)$ increases the electron density on the nitrogen atom due to the $+I$ effect.As the number of methyl groups increases,the electron density on the nitrogen atom increases,making the lone pair more available for protonation.Therefore,the order of basic strength is $III > II > I$.

Which of the following is the correct order for basic strength?

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