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Account for any two of the following: (a) Amines are basic substances while amides are neural. (b) Aromatic amines are weaker bases than aliphatic amines. |
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Answer» Solution :(a) In amines alkyl GROUP is an electron releasing group which increases the electron DENSITY on nitrogen thus making them basic whereas in amides `R-overset(O)overset(||)(C)-` group is electron withdrawijg, therefore they are neutral. (b) It is because aryl group is an electron withdrawing group which DECREASES electron density on nitrogen atom, making them less basic whereas alkyl group is electron releasing whcih makes alkylamines more basic. |
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