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Grade 12th passOrganic Chemistry

pKb of aniline is more than that of methylamine.comment ??

Profile image of Harshit Singh
5 Years agoGrade 12th pass
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1 Answer

Profile image of Pawan Prajapati
5 Years ago
Answer ::

In CH3– NH2, the +l effect of methyl group increases the electron density around N atom and it increases the electron releasing tendency of the molecule. In C6H5 – NH2 the resonance effect causes delocalisation of lone pair over the ring and thereby decreases its basic strength. Since aniline is less basic than methylamine, its pKb value is greater than that of CH3NH2.


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