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Considering the basic strength of amines...

Considering the basic strength of amines in aqueous sloution which one has the smallest `pk_(b)` value .

A

`(CH_(3))_(3)N`

B

`C_(6)H_(5)NH_(2)`

C

`(CH_(3))_(2)N`

D

`Ch_(3)NH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Smallest `pK_(0)` means highest `K_(b)` value i.e the strongest base Aliphatic amines are more basic than aromatic amines
`(CH_(3))_(2)NHgtCH_(3)NH_(2)gt(CH_(3))_(3)N`
`(CH_(3))_(2)NH` is most basic as the resulting positive ion is most stable on account of `+1` effect of alkyl groups as well as effective solvation of cation .
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