pK b of aniline is more than that of methyl amine. Explain why?
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Reasons are
1.Aniline undergoes resonance and as a result, the electrons on the N-atom are delocalized over the benzene ring. Therefore, the electrons on the N-atom are less available to donate.On the other hand, in case of methylamine (due to the +I effect of methyl group), the electron density on the N-atom is increased. As a result, aniline is less basic than methylamine. Thus, pKb of aniline is more than that of methylamine.
2.Ethylamine when added to water forms intermolecular H−bonds with water. Hence, it is soluble in water.aniline does not undergo H−bonding with water to a very large extent due to the presence of a large hydrophobic −C6H5 group. Hence, aniline is insoluble in water
3.Due to the +I effect of −CH3 group, methylamine is more basic than water. Therefore, in water, methylamine produces OH− ions by accepting H+ ions from water
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Answer:
it is due the electron withdrawing nature of methyl amine
Explanation:
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