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प्रश्न
Give reasons for the following:
CH3NH2 is more basis than C6H5NH2.
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उत्तर
Aromatic amines are far less basic than aliphatic amines. This can be explained as follows:
Resonance stabilisation is there in aniline. It can be regarded as a resonance hybrid of the following structures:
Hence, the lone pair of electrons on the nitrogen atom gets delocalised over benzene ring and thus is less available for protonation.
The electron density on the nitrogen atom is increased by electron-donating inductive effect of the alkyl groups. As a result, aliphatic amines are much stronger bases than aniline.
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संबंधित प्रश्न
Classify the following amine as primary, secondary or tertiary:
(C2H5)2NH
A tertiary amine is an organic compound ____________.
Account for the following.
Although amino group is o- and p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
Identify A, B and C.
\[\ce{CH3 - NO2 ->[LiAlH4] A ->[2CH3CH2Br] B ->[H2SO4] C}\]
How will you convert diethylamine into N-nitrosodiethylamine?
The following amine can be classified as:
Classify the following amine as primary, secondary or tertiary:
Which among the following is the strongest Bronsted base?
Assertion A: Aniline on nitration yields ortho, meta and para nitro derivatives of aniline.
Reason R: Nitrating mixture is a storng acidic mixture.
In the light of the above statements, choose the correct answer from the options given below:
Write short note on Ammonolysis.
