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The correct order of the basic strength of methyl substituted amines in aqueous solution is:

1. (CH3)2NH > CH3NH2 > (CH3)3N
2. (CH3)3N > CH3NH2 > (CH3)2NH
3. (CH3)3N > (CH3)2NH > CH3NH2
4. CH3NH2 > (CH3)2NH > (CH3)3N

Correct answer: (CH3)3N > (CH3)2NH > CH3NH2

Solution

The basic strength of methyl-substituted amines increases with the number of methyl groups attached to the nitrogen atom. This is because the methyl groups donate electron density to the nitrogen atom, increasing its ability to accept a proton.

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