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Point out the correct decreasing order o...

Point out the correct decreasing order of `pK_(b)` values of following amines `C_(2)H_(5)NH_(2),C_(6)H_(5)NHCH_(3),(C_(2)H_(5))_(2)NHandC_(6)H_(5)NH_(2)`

A

`(C_(2)H_(5))_(2)NHgtC_(2)H_(5)NH_(2)gtC_(6)H_(5)NHCH_(3)gtC_(6)H_(5)NH_(2)`

B

`(C_(2)H_(5))_(2)NHgtC_(6)H_(5)NHCH_(3)gtC_(6)H_(5)NH_(2)gtC_(2)H_(5)NH_(2)`

C

`C_(6)H_(5)NH_(2)gtC_(6)H_(5)NHCH_(3)gt(C_(2)H_(5))_(2)NHgtC_(2)H_(5)NH_(2)`

D

`C_(2)H_(5)NH_(2)gt(C_(2)H_(5))_(2)NHgtC_(6)H_(5)NHCH_(3)gtC_(6)H_(5)NH_(2)`

Text Solution

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The correct Answer is:
C
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In the following cases rearrange the compounds as directed: (i) In an increasing order of basic strength: C_(6)H_(5)NH_(2), C_(6)H_(5)N(CH_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2) (ii) In a decreasing order of basic strength: Aniline, p-nitroaniline and p-toluidine (iii) In an increasing order of pK_(b) values: C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2)NH and C_(6)H_(5)NH_(2)

Arrange the following: (i) In decreasing order of the pK_(b) values: C_(2)H_(5)NH_(2),C_(6)H_(5)NHCH_(3),(C_(2)H_(5))_(2)NHandC_(6)H_(5)NH_(2) (ii) In increasing order of basic strength: C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(2)H_(5))_(2)NH andCH_(3)NH_(2) (iii) In increasing order of basic strength: (a) Aniline, p-nitroaniline and p-toluidine (b) C_(6)H_(5)NH_(2),C_(6)H_(5)NHCH_(3),C_(6)H_(5)CH_(2)NH_(2) (iv) In decreasing order of basic strength in gas phase: C_(2)H_(5)NH_(2),(C_(2)H_(5))_(2)NH,(C_(2)H_(5))_(3)NandNH_(3) (v) In increasing order of boiling point: C_(2)H_(5)OH,(CH_(3))_(2)NH,C_(2)H_(5)NH_(2) (vi) In increasing order of solubility in water: C_(6)H_(5)NH_(2),(C_(2)H_(5))_(2)NH,C_(2)H_(5)NH_(2^.)

The correct order of K_(b) value of following is (C_(2)H_(5))_(2)overset(..)(N)H,NH_(3)overset(..)(N)(C_(2)H_(5))_(3)

Arrange the following in decreasing order of their basic strength : C_(6)H_(5)NH_(2),C_(2)H_(5)NH_(2),(C_(2)H_(5))_(2)NH_(3)

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