NEET-XII-Chemistry
Previous Year Paper year:2017
Qstn# 90 Prvs-Qstn
- #90The correct order of the basic strength of
methyl substituted amines in aqueous solution
is :
(1) ``(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N``
(2) ``(CH_3)_3N > CH_3NH_2 > (CH_3)_2NH``
(3) ``(CH_3)_3N > (CH_3)_2NH > CH_3NH_2``
(4) ``CH_3NH_2 > (CH_3)_2NH > (CH_3)_3N``digAnsr: 1Ans : ( 1 )
Sol. In aqueous solution, electron donating
inductive effect, solvation effect (H-bonding)
and steric hindrance all together affect basic
strength of substituted amines
Basic character :
(CH
3
)
2
NH > CH
3
NH
2
> (CH
3
)
3
N
2° 1° 3°
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