Given below are two statements

Statement I : Aniline is less basic than acetamide.
Statement II: In aniline, the lone pair of electrons on nitrogen atom is delocalise over benzene ring due to resonance and hence less available to a proton.

Choose the most appropriate option

Statement I is false but statement II is true

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Both statement I annd statement II are false

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Statement I is true but statement II is false

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Both statement I and statement II are true.

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Solution

The correct option is A Statement I is false but statement II is true

In aniline, lone pair of electrons on nitrogen atom is delocalise over benzene ring due to resonance and hence less available to a proton.

Also in acetamide, lone pair of 'N' in amide is in conjugation with carbonyl that is strong electron withdrawing group, so lone pair on N of acetamide is less available compare to aniline. Hence, aniline is more basic than acetamide.

Hence, option (a) is correct.

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Similar questions

Q. In aniline, the lone pair of electrons on the

N

atom is delocalised over the benzene ring. As a result, the electron density on nitrogen increases.

Q. Assertion :

p K b

of aniline is more than that of methylamine. Reason: In aniline, the lone pair of electrons on the

N

atom is delocalized over the benzene ring. As a result, the electron density of nitrogen decreases. In contrast, in

{C H}_{3} {N H}_{2} (+ I)

effect of

{C H}_{3}

increases the electron density on the

N

atom. Therefore, aniline is a weaker base than methylamine and hence its

p K_{b}

value is higher than that of methylamine.

Q. Given below are two statements:

Statement I: A mixture of chloroform and aniline can be separated by simple distillation.

Statement II: When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.

In the light of the above statements, choose the most appropriate answer from the options given below:

Q. Assertion :In strongly acidic solutions, aniline becomes more reactive towards electrophilic reagents. Reason: The amino group being completely protonated in strongly acidic solution, the lone pair of electrons on nitrogen is no longer available for resonance.

In the following question two Statement-I (Assertion) and Statement-2 (Reason) are provided. each question has 4 choices (a), (b), (c) and (d) for its answer, out of which Only One is correct. Mark your responses from the following options:
Statement-1: Aniline becomes more reactive towards electrophilic aromatic substitution in presence of strongly acidic solution.
Statement-2: The amino group is completely protonated in strongly acidic medium. Thus the lone pair of electrons on the nitrogen is no longer available for resonance.

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Given below are two statements Statement I : Aniline is less basic than acetamide. Statement II: In aniline, the lone pair of electrons on nitrogen atom is delocalise over benzene ring due to resonance and hence less available to a proton. Choose the most appropriate option

Given below are two statements

Statement I : Aniline is less basic than acetamide.
Statement II: In aniline, the lone pair of electrons on nitrogen atom is delocalise over benzene ring due to resonance and hence less available to a proton.

Choose the most appropriate option