Question

The correct increasing order of basic strength for the
following compounds is .............. .
(I) (II) (III)
(a) II < III < I (b) III < I < II
(c) III < II < I (d) II < I < III

Answer 1

Answer:

The correct answer is Option c

Answer 2

II < I < III is the trend of basicity.

Explanation:

• The basicity of an alkyl or aryl amine is because of the presence of lone pair of electron on the nitrogen.

• In the option 1, we can see annilene.

• There's no group attached with benzene ring which can modify the annilene property.

• In option 2, its nitroannilene.

• This nitro group is a - I and - R group.

• So it draws electron away from the benzene ring and subsequently the lone pair of annilene isn't that much available for basicity.

• Where in option 3, we can see that there's paramethylannilene.

• Methyl group is a +I group which can push electron cloud to the benzene ring.

• This leads to the increase in electron pool to benzene and thus, electron pair of nitrogen is more available.

• So the trend is II < I < III.

For more information about basicity of annilene,

https://brainly.in/question/10848246

The basicity of dimethylaniline in aqueous solution - Brainly.in

https://brainly.in/question/15421405

The basicity of aniline is less than that of cyclohexylamine.

This is due to

(a) + R effect of —NH₂ group

(b) – I effect of —NH₂ group

(c) – R effect of —NH₂ group

(d) hyperconjugation effect