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The correct order of the basic strength of methyl substituted amines in aqueous solution is:
A
$(CH_3)_2NH>CH_3NH_2>(CH_3)_3N$
B
$(CH_3)_3N>CH_3NH_2>(CH_3)_2NH$
C
$(CH_3)_3N>(CH_3)_2NH>CH_3NH_2$
D
$CH_3NH_2>(CH_3)_2NH>(CH_3)_3N$
Detailed Solution
In aqueous solution, the electron-donating inductive effect, solvation effect (H-bonding) and steric hindrance together decide the basic strength of substituted amines.
Basic character: $(CH_3)_2NH>CH_3NH_2>(CH_3)_3N$ (2° > 1° > 3°)