CH3CONH2 is a weaker base than CH3CH2NH2 .

CH3CONH2 is a weaker base than CH3CH2NH2 .
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Due to resonance, the lone pair of electrons on the nitrogen atom in CH3CONH2 is delocalised over the keto gp. There is no such effect in CH3CH2NH2 . Due to reduction in electron density on N of CH3CONH2 , it is a weaker base than CH3CH2NH2 .
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