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  4. The basicity of aniline is less than that of cyclohexylamine. This is due to

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Q. The basicity of aniline is less than that of cyclohexylamine. This is due to

KCETKCET 2006

Solution:

$—NH_2$ has +R effect, it donates electrons to the benzene ring. As a result, the lone pair of electron on the N-atom gets delocalized over the benzene ring and thus it is less readily available for protonation. Hence, aniline is a weaker base than cyclohexylamine.

image

Resonance structure of aniline.