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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
When considering electrophilic aromatic substitution reactions the halides are described as...
- a)Ortho/para directing and activating
- b)Ortho/para directing and deactivating
- c)Meta directing and activating
- d)Meta directing and deactivating
Correct answer is option 'B'. Can you explain this answer?
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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice que...
Halides are ortho, para directing groups but unlike most ortho, para directors, halides mildly deactivate the arene. This unusual behavior can be explained by two properties: Since the halogens are very electronegative they cause inductive withdrawal (withdrawal of electrons from the carbon atom of benzene).
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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice que...
Bcoz they withdraw the electron density towards themselves due to -I effect and hence decrease the electron density in the aromatic ring.
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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice que...
Explanation:
The correct answer is option 'B', which states that halides are ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
Electrophilic Aromatic Substitution Reactions:
- Electrophilic aromatic substitution is a type of organic reaction in which an electrophile replaces an atom or group of atoms in an aromatic compound.
- Aromatic compounds are organic compounds containing one or more benzene rings.
- Electrophilic aromatic substitution reactions involve the attack of an electrophile on the aromatic ring, resulting in the substitution of one of the hydrogen atoms on the ring.
Halides in Electrophilic Aromatic Substitution Reactions:
- Halides, such as chlorine (Cl), bromine (Br), and iodine (I), can undergo electrophilic aromatic substitution reactions.
- In these reactions, the halide acts as a leaving group, and an electrophile attacks the aromatic ring, replacing the halide atom.
- Halides are generally ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
Ortho/Paradirecting:
- Ortho/paradirecting groups direct the incoming electrophile to the ortho or para positions on the aromatic ring.
- Ortho positions are adjacent to the substituent, while para positions are opposite to the substituent.
- In the case of halides, they donate electron density through the inductive effect, making the ring more electron-rich and activating it towards electrophilic attack.
- However, due to the inductive effect, halides also destabilize the intermediate carbocation formed during the reaction, making the reaction slower and less favorable.
- Therefore, halides are considered deactivating groups in electrophilic aromatic substitution reactions.
Conclusion:
- Halides are ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
- This is due to their ability to donate electron density to the aromatic ring, activating it towards electrophilic attack, but also destabilizing the intermediate carbocation, making the reaction slower and less favorable.
The correct answer is option 'B', which states that halides are ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
Electrophilic Aromatic Substitution Reactions:
- Electrophilic aromatic substitution is a type of organic reaction in which an electrophile replaces an atom or group of atoms in an aromatic compound.
- Aromatic compounds are organic compounds containing one or more benzene rings.
- Electrophilic aromatic substitution reactions involve the attack of an electrophile on the aromatic ring, resulting in the substitution of one of the hydrogen atoms on the ring.
Halides in Electrophilic Aromatic Substitution Reactions:
- Halides, such as chlorine (Cl), bromine (Br), and iodine (I), can undergo electrophilic aromatic substitution reactions.
- In these reactions, the halide acts as a leaving group, and an electrophile attacks the aromatic ring, replacing the halide atom.
- Halides are generally ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
Ortho/Paradirecting:
- Ortho/paradirecting groups direct the incoming electrophile to the ortho or para positions on the aromatic ring.
- Ortho positions are adjacent to the substituent, while para positions are opposite to the substituent.
- In the case of halides, they donate electron density through the inductive effect, making the ring more electron-rich and activating it towards electrophilic attack.
- However, due to the inductive effect, halides also destabilize the intermediate carbocation formed during the reaction, making the reaction slower and less favorable.
- Therefore, halides are considered deactivating groups in electrophilic aromatic substitution reactions.
Conclusion:
- Halides are ortho/paradirecting and deactivating in electrophilic aromatic substitution reactions.
- This is due to their ability to donate electron density to the aromatic ring, activating it towards electrophilic attack, but also destabilizing the intermediate carbocation, making the reaction slower and less favorable.
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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer?
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Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer?.
Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Direction (Q. Nos. 9 - 12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.When considering electrophilic aromatic substitution reactions the halides are described as...a)Ortho/paradirecting and activatingb)Ortho/paradirecting and deactivatingc)Metadirecting and activatingd)Metadirecting and deactivatingCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
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