NEET-XII-Chemistry

exam-1 year:2016

with Solutions - page 3
  • #88
    The correct statement regarding the basicity
    of arylamines is :-
    (1) Arylamines are generally less basic than
    alkylamines because the nitrogen lone-pair
    electrons are delocalized by interaction with the
    aromatic ring ``\pi`` electron system.
    (2) Arylamines are generally more basic than
    alkylamines because the nitrogen lone-pair
    electrons are not delocalized by interaction with
    the aromatic ring ``\pi``electron system.
    (3) Arylamines are generally more basic than
    alkylamines because of aryl group.
    (4) Arylamines are generally more basic than
    alkylamines, because the nitrongen atom in
    arylamines is sp-hybridized.
    digAnsr:   1
    Ans : (1)
    Sol.
    NH2
    ..
    Aryl amine
    ..
    R NH2
    alkyl amine
    * Delocalized lone pair of nitrogen
    * less basic