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Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]
- a)2, 4, 6-trinitrobenzene
- b)2,4,6- trinitrophenol
- c)p-nitrophenol
- d)nitrobenzene
Correct answer is option 'B'. Can you explain this answer?
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Phenol, when it first reacts with concentrated sulphuric acidand then ...
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Phenol, when it first reacts with concentrated sulphuric acidand then ...
Explanation:
Reaction 1: Phenol reacts with concentrated sulphuric acid
When phenol reacts with concentrated sulphuric acid, it undergoes electrophilic substitution reaction. The reaction takes place as follows:
Phenol + Concentrated Sulphuric Acid → Phenol Sulphonic Acid
The presence of concentrated sulphuric acid acts as a catalyst in this reaction. The hydrogen atom in the hydroxyl group of phenol is replaced by a sulphonic group (-SO3H). This reaction is known as sulphonation.
Reaction 2: Phenol Sulphonic Acid reacts with concentrated nitric acid
When phenol sulphonic acid reacts with concentrated nitric acid, it undergoes another electrophilic substitution reaction. The reaction takes place as follows:
Phenol Sulphonic Acid + Concentrated Nitric Acid → 2,4,6-Trinitrophenol + Water
In this reaction, the nitro group (-NO2) is introduced into the benzene ring. The nitration of phenol sulphonic acid leads to the formation of 2,4,6-trinitrophenol, also known as picric acid.
Final Product: 2,4,6-Trinitrophenol (Option B)
Therefore, when phenol first reacts with concentrated sulphuric acid and then with concentrated nitric acid, the final product obtained is 2,4,6-trinitrophenol (option B).
Summary:
- Phenol reacts with concentrated sulphuric acid to form phenol sulphonic acid.
- Phenol sulphonic acid reacts with concentrated nitric acid to form 2,4,6-trinitrophenol.
- The final product obtained is 2,4,6-trinitrophenol (option B).
Reaction 1: Phenol reacts with concentrated sulphuric acid
When phenol reacts with concentrated sulphuric acid, it undergoes electrophilic substitution reaction. The reaction takes place as follows:
Phenol + Concentrated Sulphuric Acid → Phenol Sulphonic Acid
The presence of concentrated sulphuric acid acts as a catalyst in this reaction. The hydrogen atom in the hydroxyl group of phenol is replaced by a sulphonic group (-SO3H). This reaction is known as sulphonation.
Reaction 2: Phenol Sulphonic Acid reacts with concentrated nitric acid
When phenol sulphonic acid reacts with concentrated nitric acid, it undergoes another electrophilic substitution reaction. The reaction takes place as follows:
Phenol Sulphonic Acid + Concentrated Nitric Acid → 2,4,6-Trinitrophenol + Water
In this reaction, the nitro group (-NO2) is introduced into the benzene ring. The nitration of phenol sulphonic acid leads to the formation of 2,4,6-trinitrophenol, also known as picric acid.
Final Product: 2,4,6-Trinitrophenol (Option B)
Therefore, when phenol first reacts with concentrated sulphuric acid and then with concentrated nitric acid, the final product obtained is 2,4,6-trinitrophenol (option B).
Summary:
- Phenol reacts with concentrated sulphuric acid to form phenol sulphonic acid.
- Phenol sulphonic acid reacts with concentrated nitric acid to form 2,4,6-trinitrophenol.
- The final product obtained is 2,4,6-trinitrophenol (option B).
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Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer?
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Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer?.
Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer?.
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Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Phenol, when it first reacts with concentrated sulphuric acidand then with concentrated nitric acid, gives [2008]a)2, 4, 6-trinitrobenzeneb)2,4,6- trinitrophenolc)p-nitrophenold)nitrobenzeneCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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