Which one of the following is the strongest base in aqueous solution?
Which one of the following is the strongest base in aqueous solution?
Trimethylamine
Aniline
Dimethylamine
Methylamine
Solution
In aqueous solution basicity order of $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ amine with methyl group is
$2^{\circ}>1^{\circ}>3^{\circ}$
In case of aniline lone pair of nitrogen is involved in resonance, so it is weaker base than aliphatic amines.
Hence, (C) is correct.