Home
Class 12
CHEMISTRY
The increasing order of K (b) for the fo...

The increasing order of `K _(b)` for the following compounds will be:
`H _(2) N- overset(NH) overset(||) underset(I)(C)-NH_(2), CH_(3) -overset(NH) overset(||)underset(II) (C)-NH_(2), underset(III)(CH_(2))-NH_(2)`

A

`II lt I lt II`

B

`I lt IIlt III`

C

`IIIlt IIlt I`

D

`II lt I lt III`

Text Solution

Verified by Experts

The correct Answer is:
C
`H _(2)N -overset(NH) overset(||) underset(I) C - NH_(2):` : Guanidine type strongest organic base, conjugate acid is highly stabilised by resonance structures.
`CH _(3) -overset(NH) overset(||)C - NH_(2):` also guanidine type but less resonance stabilization of conjugate acid
`CH _(3) -overset(II) underset(III)(CH_(2))- NH_(2) :` aliphaticamine conjugate acid is not stabilized by resonance order of`K _(b)` values
Promotional Banner

Similar Questions

Explore conceptually related problems

The correct order of the basicities of the following compounds is CH_(3)-underset(2)(CH_(2))-NH_(2)-underset(3)((CH_(3))_(2)-NH,CH_(3)-underset(4)overset(O)overset(||)(C)-NH_(2)

Find more basic between following pairs of compounds? underset((I))((R )H_(2)N-overset(O)overset(||)(C )-NH_(2)) & underset((II))(NH_(2)-overset(NH)overset(||)(C )-NH_(2))

The structure given below represents CH_(3)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-NH_(2)

NH_(2)-overset(O)overset(||)C-NH_(2) underset(Cl_(2))overset(NaOH)rarr Major product is :

The increasing basicity order of the following compounds is : (A) CH_(3)CH_(2)NH_(2) (B) CH_(3)CH_(2)overset(underset(|)(CH_(2)CH_(3)))(NH) (C ) H_(3)C-overset(underset(|)(CH_(3)))(N)-CH_(3) (D) Ph-overset(underset(|)(CH_(3)))(N)-H

Correct IUPAC name of following compound is: Hoverset(O)overset(||)(C)-underset(COOH)underset("| ")(CH)-overset(NH_(2))overset("| ")(CH)-COOH

Write increasing order of basic strength of following: (a)CH_(3) -underset(O)underset(||)C - overset(..)NH_(2)" "(b) CH_(3) - CH_(2) - overset(..)NH_(2) (c)CH_(3) - underset(..)underset(NH)underset(||)C - overset(..)NH_(2)" "(d)NH_(2) - underset(..)underset(NH) underset(||)C - overset(..)NH_(2)