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Give reasons for the following: (CH3)2NH is more basic than (CH3)3N in an aqueous solution. - Chemistry

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Give reasons for the following: (CH3)2NH is more basic than (CH3)3N in an aqueous solution.

Account for the following :

(CH3)2NH is more basic than (CH3)3N in an aqueous solution

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Solution

In (CH3)3N, there is maximum steric hindrance and least solvation, but in (CH3)2NH, the solvation is more and the steric hindrance is less than in (CH3)3N. Although the +I effect is less because there are two methyl groups, di-methyl amine is still a stronger base than tri-methyl amine.

Concept: Physical Properties of Amines
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