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Organic Chemistry

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28 Jan 2012 21:20:01 IST

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amines

Chemistry

ifCH3CH2NH2 contains a basic NH2 group , but CH3CONH2 does not contains basic in NH2 group , why ? explaain it

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Madhusudan Chavan

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Joined: 9 Mar 2007

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3 Feb 2012 18:04:39 IST

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The cause of basicity is the availability of lone pair of electrons on nitrogen for protonation. In CH3CH2NH2 the lone pair is freely available. In CH3CONH2 the lone pair is involved in resonace with C=O hence not freely available for protonation thus it is not basic, however amides are amphoteric in nature ,i.e., they show both acidic and basic properties.

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