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Benzene ring in aniline is highly activa...

Benzene ring in aniline is highly activated. This is due to the sharing of lone pair of nitrogen with the ring which results in increase in the electron density on the ring and hence facilitates the electrophilic attack. The substitution mainly takes place at ortho and para positions because electron density is more at ortho and para positions. On reaction with aqueous bromine all the ortho and para positions get substituted resulting in the formation of 2,4,6-tribromoaniline. To get a monobromo compound, the amino group is acetylated before bromination. After bromination, the bromoacetanilide is acid hydrolysed to give the desired halogenated amine. In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices:
Assertion (A): Benzene ring is aniline is highly deactivated. Reason (R): In aniline, the sharing of lone pair of nitrogen with the ring increases the electron density on the ring.

A

Assertion and reason both are correct statements and reason is correct explanation for assertion.

B

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C

Assertion is correct statement but reason is wrong statement

D

Assertion is wrong statement but reason is correct statement

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason statements about aniline, we will analyze both statements step by step. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that "the benzene ring in aniline is highly deactivated." - In reality, the benzene ring in aniline is highly activated due to the presence of the amino group (-NH2), which donates its lone pair of electrons to the ring. This increases the electron density on the ring, making it more reactive towards electrophilic substitution reactions. 2. **Understanding the Reason (R)**: - The reason states that "in aniline, the sharing of the lone pair of nitrogen with the ring increases the electron density on the ring." - This statement is correct. The lone pair of electrons on the nitrogen atom of the amino group participates in resonance with the benzene ring, which indeed increases the electron density at the ortho and para positions of the ring. 3. **Evaluating the Statements**: - Since the assertion is incorrect (the benzene ring is activated, not deactivated), and the reason is correct (the lone pair sharing increases electron density), we can conclude that the two statements do not support each other. 4. **Conclusion**: - Based on the analysis, the correct answer is that the assertion is false and the reason is true. Therefore, the answer to the question is option 4: "Assertion is wrong statement but the reason is the correct statement."

To solve the question regarding the assertion and reason statements about aniline, we will analyze both statements step by step. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states that "the benzene ring in aniline is highly deactivated." - In reality, the benzene ring in aniline is highly activated due to the presence of the amino group (-NH2), which donates its lone pair of electrons to the ring. This increases the electron density on the ring, making it more reactive towards electrophilic substitution reactions. ...
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