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In the following compounds, the decreasing order of basic strength will be |
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(a) |
NH3 > C2H5NH2 > (C2H5)2NH |
(b) |
C2H5NH2 > NH3 > (C2H5)2NH |
|
(c) |
(C2H5)2NH > NH3 > C2H5NH2 |
(d) |
(C2H5)2NH > C2H5NH2 > NH3 |
|
In the following compounds, the decreasing order of basic strength will be |
|||
|
(a) |
NH3 > C2H5NH2 > (C2H5)2NH |
(b) |
C2H5NH2 > NH3 > (C2H5)2NH |
|
(c) |
(C2H5)2NH > NH3 > C2H5NH2 |
(d) |
(C2H5)2NH > C2H5NH2 > NH3 |
Correct order of Kb value
ii
(C2H5)2N > (C2H5)3N > NH3
In aqueous medium sec. amines are most basic.
3°amines are more basic than NH3 as +I factor dominate over steric factor.