CBSE Class 12 · 2002 · Foreign · Compounds Containing NitrogenVery Short Answer

Account for the following: aniline is a weaker base than cyclohexylamine.

Solution

In C

_{6}

_{5}

_{2}

the nitrogen lone pair is shared with the π-system (resonance), and protonation destroys that stabilisation.
Cyclohexylamine's saturated ring offers no delocalisation — its lone pair is undiminished, and the +I ring even helps.
So cyclohexylamine ≫ aniline as a base.

CBSE Class 12 Board · 2002 · Foreign · Subjective

Practise more: all CBSE board PYQs on Compounds Containing Nitrogen →

More board questions on Compounds Containing Nitrogen

The correct name of the given reaction is
$Ar - N_{2}^{+} X^{-} CuCN/KCN Ar - CN + N_{2}$
CBSE 2024View solution →
(a) Carry out the following conversions:
(i) nitrobenzene to aniline
(ii) aniline to phenol
CBSE 2024View solution →
(b)(i) Write a chemical test to distinguish between dimethylamine and ethanamine.
(ii) Write the product formed when benzenediazonium chloride is treated with KI.
CBSE 2024View solution →
A compound 'X' with molecular formula C₃H₉N reacts with C₆H₅SO₂Cl to give a solid insoluble in alkali. Identify 'X' and give the IUPAC name of the product. Write the reaction involved.
CBSE 2024View solution →
Amides can be converted into amines by the reaction named:
CBSE 2023View solution →
Which of the following would not be a good choice for reducing nitrobenzene to aniline?
CBSE 2023View solution →