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Account for the following pK(b) of ani...

Account for the following
`pK_(b)` of aniline is more than that of methylamine.

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In aniline, the electron pair on nitrogen atom is involved in conjugation with ring and is less available for protonation than that in methylamine. Therefore, `pK_(b)` value of aniline is more than that of methylamine and aniline is less basic (as higher the `pK_(b)` value, weaker is the base).
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