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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.
Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is true
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Directions: In the following questions, A statement of Assertion (A) ...
The carboxyl group (-COOH) is deactivating group because it is electron with drawing group. It decreases the electron density at benzene ring, hence deactivates it towards electrophilic substitution reactions.
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Directions: In the following questions, A statement of Assertion (A) ...
Assertion (A): Benzoic acid does not undergo Friedel-Crafts reaction.
Reason (R): The carboxyl group is activating and undergoes electrophilic substitution reaction.
Explanation:
Benzoic acid:
Benzoic acid is an aromatic carboxylic acid with the chemical formula C6H5COOH. It contains a carboxyl group (-COOH) attached to a benzene ring. The presence of the carboxyl group makes benzoic acid a unique compound with specific reactivity.
Friedel-Crafts reaction:
Friedel-Crafts reaction is a classic example of electrophilic aromatic substitution (EAS) reaction. It involves the substitution of a hydrogen atom on an aromatic ring with an electrophile. In the presence of a Lewis acid catalyst, such as aluminum chloride (AlCl3), the electrophile attacks the aromatic ring, leading to the formation of a new substituted product.
Reasoning:
The carboxyl group in benzoic acid is activating towards electrophilic substitution reactions. This means that it enhances the reactivity of the benzene ring towards electrophiles. However, benzoic acid does not undergo the Friedel-Crafts reaction.
Explanation of Assertion (A):
Benzoic acid does not undergo the Friedel-Crafts reaction. This can be attributed to the presence of the carboxyl group, which deactivates the aromatic ring towards electrophilic substitution reactions. The carboxyl group has a strong electron-withdrawing effect due to the resonance of the adjacent carbonyl group. This electron-withdrawing effect reduces the electron density on the benzene ring, making it less reactive towards electrophiles. As a result, benzoic acid does not participate in the Friedel-Crafts reaction.
Explanation of Reason (R):
The reason provided is partially correct. The carboxyl group in benzoic acid is indeed activating towards electrophilic substitution reactions. It enhances the reactivity of the benzene ring towards electrophiles. However, this does not explain why benzoic acid does not undergo the Friedel-Crafts reaction. The deactivating effect of the carboxyl group on the benzene ring is the main reason for its lack of reactivity in the Friedel-Crafts reaction.
Conclusion:
Both the assertion and reason are true, but the reason does not provide a correct explanation for the assertion. Therefore, option C is the correct answer.
Reason (R): The carboxyl group is activating and undergoes electrophilic substitution reaction.
Explanation:
Benzoic acid:
Benzoic acid is an aromatic carboxylic acid with the chemical formula C6H5COOH. It contains a carboxyl group (-COOH) attached to a benzene ring. The presence of the carboxyl group makes benzoic acid a unique compound with specific reactivity.
Friedel-Crafts reaction:
Friedel-Crafts reaction is a classic example of electrophilic aromatic substitution (EAS) reaction. It involves the substitution of a hydrogen atom on an aromatic ring with an electrophile. In the presence of a Lewis acid catalyst, such as aluminum chloride (AlCl3), the electrophile attacks the aromatic ring, leading to the formation of a new substituted product.
Reasoning:
The carboxyl group in benzoic acid is activating towards electrophilic substitution reactions. This means that it enhances the reactivity of the benzene ring towards electrophiles. However, benzoic acid does not undergo the Friedel-Crafts reaction.
Explanation of Assertion (A):
Benzoic acid does not undergo the Friedel-Crafts reaction. This can be attributed to the presence of the carboxyl group, which deactivates the aromatic ring towards electrophilic substitution reactions. The carboxyl group has a strong electron-withdrawing effect due to the resonance of the adjacent carbonyl group. This electron-withdrawing effect reduces the electron density on the benzene ring, making it less reactive towards electrophiles. As a result, benzoic acid does not participate in the Friedel-Crafts reaction.
Explanation of Reason (R):
The reason provided is partially correct. The carboxyl group in benzoic acid is indeed activating towards electrophilic substitution reactions. It enhances the reactivity of the benzene ring towards electrophiles. However, this does not explain why benzoic acid does not undergo the Friedel-Crafts reaction. The deactivating effect of the carboxyl group on the benzene ring is the main reason for its lack of reactivity in the Friedel-Crafts reaction.
Conclusion:
Both the assertion and reason are true, but the reason does not provide a correct explanation for the assertion. Therefore, option C is the correct answer.
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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer?
Question Description
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer?.
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Benzoic acid does not undergo Friedel-craft’s reaction.Reaction (R): The carboxyl group is activating and undergo electrophilic substitution reaction.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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