Arrange the following in decreasing order of | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The basic strength of amines depends on the availability of the lone pair on the nitrogen atom.Electron-withdrawing groups decrease the electron d

Vedclass · Accepted Answer

$II > I > III$

Vedclass · Answer

(B) The basic strength of amines depends on the availability of the lone pair on the nitrogen atom.Electron-withdrawing groups decrease the electron density on the nitrogen atom,thereby decreasing basicity.In $III$ $(CH \equiv CCH_2NH_2)$,the $sp$-hybridized carbon is highly electronegative ($-I$ effect),which strongly withdraws electrons,making it the least basic.In $I$ $(CH_2=CHCH_2NH_2)$,the $sp^2$-hybridized carbon has a weaker $-I$ effect compared to the $sp$-hybridized carbon,so it is more basic than $III$ but less basic than $II$.In $II$ $(CH_3CH_2CH_2NH_2)$,the alkyl group $(CH_3CH_2CH_2-)$ shows a $+I$ effect,which increases the electron density on the nitrogen atom,making it the most basic.Therefore,the decreasing order of basic strength is $II > I > III$.

Arrange the following in decreasing order of their basic strength:
$I$. $CH_2=CHCH_2NH_2$
$II$. $CH_3CH_2CH_2NH_2$
$III$. $CH \equiv CCH_2NH_2$

Similar Questions

Which of the following amines is most basic in nature in the aqueous phase?

What is obtained upon the reduction of a Schiff base?

What is the product formed when nitrobenzene undergoes nitration?

Identify the product $Z$ in the following reaction sequence:
Aniline $\xrightarrow{CH_3COCl} X$ $\xrightarrow{Br_2/AlBr_3} Y$ $\xrightarrow{H_3O^+} Z$

$CH_3NH_2 + CHCl_3 + KOH \rightarrow$ Nitrogen containing compound $+ KCl + H_2O$. The nitrogen-containing compound is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following in decreasing order of their basic strength:$I$. $CH_2=CHCH_2NH_2$$II$. $CH_3CH_2CH_2NH_2$$III$. $CH \equiv CCH_2NH_2$