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All three classes of aliphatic amines ar...

All three classes of aliphatic amines are stronger bases tha ammonia. Explain.

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Aliphatic amines are stronger bases than ammonia. This can be explained on the basis of the +I effect or electron donating effect of alkyl group attached to the nitrogen atom. This increase the electron density on the nitrogen atom. This amines can donate the lone pair of electrons more easily than ammonia.

Moreover, electron releasing effect of alkyl group stabilise the alkyl ammonium formed and hance, shifts the equilibrium in the forward direction making the alkylamine stronger base than ammonia.
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