The correct order of increasing basicity...

The correct order of increasing basicity of the given conjugate bases `(R=CH_(3))` is :

`RCOoverline(O)ltoverline(N)H_(2)lt-=overline(C)ltoverline(R)`

`RCOoverline(O)ltHC-=overline(C)ltoverline(N)H_(2)ltoverline(R)`

`RCOoverline(O)ltHC-=overline(C)ltoverline(R)ltoverline(N)H_(2)`

`overline(R)ltHC-=overline(C)ltRCOoverline(O)ltoverline(N)H_(2)`.

Text Solution

Verified by Experts

The correct Answer is:

Stronger the acid , weaker is the conjugate base. Base + proton `to` Conjugate acid Conjugate acids formed in the given question will be : `RCOOH,NH_(3),HC-=CH,CH_(4)`
Acidic strength follows order : `RCOOHgtHC-=CHgtNH_(3)gtCH_(4)`
`therefore` Basicity of conjugate bases : `RCOO^(-)ltHC-=C^(-)lt""^(-)NH_(2)ltR^(-)`

Topper's Solved these Questions

ALDEHYDES , KETONES AND CARBOXYLIC ACIDS
MODERN PUBLICATION|Exercise Recent Examination Questions|23 Videos
ALDEHYDES , KETONES AND CARBOXYLIC ACIDS
MODERN PUBLICATION|Exercise Multiple Choice Questions ( Level - I )|75 Videos
ALDEHYDES , KETONES AND CARBOXYLIC ACIDS
MODERN PUBLICATION|Exercise Level -II (Multiple Choice Questions )|60 Videos
ALCOHOLS, PHENOLS AND ETHERS
MODERN PUBLICATION|Exercise Recent Examination Questions |12 Videos
APPENDIX A
MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-I)|125 Videos

The correct order of increasing basic strength is

`NH_3ltCH_3NH_2lt(CH_3)_2NH`

`CH_3NH_2lt(CH_3)_2NHltNH_3`

`CH_3NH_2ltNH_3lt(CH_3)_2NH`

`(CH_3)_2NHltNH_3ltCH_3NH_2`

The correct order of increasing ionic character is

`BeCl_(2)ltMgCl_(2)ltCaCl_(2)ltBaCl_(2)`

`BeCl_(2)ltMgCl_(2)ltBaCl_(2)ltCaCl_(2)`

`BeCl_(2)ltBaCl_(2)ltMgCl_(2)ltCaCl_(2)`

`BaCl_(2)ltCaCl_(2)ltMgCl_(2)ltBeCl_(2)`

The correct order of increasing acid strength of the compounds

`(d) lt (a) lt (c) lt (b)`

`(d) lt (a) lt (b) lt (c)`

`(a) lt (d) lt (c) lt (b)`

`(b) lt (d) lt (a) lt (c)`