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Organic Nitrogen Compounds — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryOrganic Nitrogen Compounds2 Marks
Question
$CH _3 CONH _2$ is a weaker base than $CH _3 CH _2 NH _2$. Why?
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Answer

Due to resonance, the lone pair of electrons on the nitrogen atom in $CH _3 CONH _2$ is delocalised over the keto group. There is no such effect ip $CH _3 CH _2 NH _2$. Due to reduction in electron density on N - atom of $CH _3 CONH _2$, it is a weaker base than $CH _3 CH _2 NH _2$.

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