Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • The correct order of decreasing basic strength of the given amines is :

Q.66) The correct order of decreasing basic strength of the given amines is :
 

A) benzenamine $>$ ethanamine $>$ N -methylaniline $>\mathrm{N}$-ethylethanamine
 

B) N -methylaniline $>$ berizenamine $>$ ethanamine $>\mathrm{N}$-ethylêthanamine
 

C) N-ethylethanamine $>$ ethanamine $>$ benzenamine $>\mathrm{N}$-methylaniline
 

D) N -ethylethanamine $>$ ethanamine $>$ N -methylaniline $>$ benzenamine

 

Answers (1)

best_answer

Q.66) Aliphatic amines are generally more basic than aromatic amines.
In aromatic amines like aniline and N-methylaniline, the lone pair on nitrogen is delocalized into the aromatic ring which reduces its availability for protonation.

Secondary aliphatic amines like N-ethylethanamine are more basic than primary ones like ethanamine due to the +l effect of the alkyl groups. The higher the +I, the higher will be the basicity.

Among aromatic amines, aniline is more basic than N-methylaniline because methyl substitution on nitrogen increases delocalization of the lone pair into the ring, making it less available for bonding with a proton.

Hence, the correct answer is option (3).

 

Posted by

AANIQA QAYOOM

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

AFMC hikes MBBS seat leaving bond penalty, mandates 7 years of commission service
anam-khan

‘Patience and not backing down’: Kabir Paharia’s SC fight eases MBBS admissions for disabled candidates
anam-khan

SC wants to know if FIRs filed over suicides of IIT student, NEET aspirant

Latest Question