Class 12 Exam > Class 12 Questions > Statement I : p-nitrobenzoic acid is more rea...
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Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.
Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.
- a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I
- b)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I
- c)Statement I is correct but Statement II is incorrect
- d)Statement II is correct but Statement I is incorrect
Correct answer is option 'A'. Can you explain this answer?
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Statement I : p-nitrobenzoic acid is more reactive than benzoic acid i...
Electron withdrawing nitro group increases electrophilic character of —COOH, hence increases reactivity in Fischer’s esterification.
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Statement I : p-nitrobenzoic acid is more reactive than benzoic acid i...
Statement I: p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.
Statement II: Rate determining step in Fischer's esterification reaction of carboxylic acid is nucleophilic attack of alcohols on protonated acid.
The correct answer is option A: Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I.
Explanation:
Esterification is a reaction in which an ester is formed from a carboxylic acid and an alcohol in the presence of an acid catalyst. In this reaction, the carboxylic acid donates a proton to the alcohol, forming a protonated acid intermediate. The nucleophilic attack of the alcohol on the protonated acid results in the formation of an ester.
Statement I is correct because p-nitrobenzoic acid is more reactive than benzoic acid in an acid-catalyzed esterification reaction. The presence of a nitro group (-NO2) in p-nitrobenzoic acid increases the electron-withdrawing ability of the aromatic ring. This electron-withdrawing group enhances the acidity of the carboxylic acid, making it more likely to donate a proton to the alcohol. As a result, p-nitrobenzoic acid reacts more readily with the alcohol to form the ester.
Statement II is also correct because the rate-determining step in Fischer's esterification reaction is the nucleophilic attack of the alcohol on the protonated acid intermediate. In this step, the nucleophile (alcohol) attacks the electrophilic carbon of the protonated acid, leading to the formation of the ester. This step determines the overall rate of the reaction and is influenced by factors such as the nature of the alcohol and the acidity of the carboxylic acid.
The explanation of Statement II provides a clear understanding of why p-nitrobenzoic acid is more reactive than benzoic acid in the esterification reaction. The electron-withdrawing nitro group increases the acidity of the carboxylic acid, making it a better proton donor and enhancing the reaction with the alcohol.
In conclusion, both Statement I and Statement II are correct, and Statement II provides the correct explanation for Statement I.
Statement II: Rate determining step in Fischer's esterification reaction of carboxylic acid is nucleophilic attack of alcohols on protonated acid.
The correct answer is option A: Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I.
Explanation:
Esterification is a reaction in which an ester is formed from a carboxylic acid and an alcohol in the presence of an acid catalyst. In this reaction, the carboxylic acid donates a proton to the alcohol, forming a protonated acid intermediate. The nucleophilic attack of the alcohol on the protonated acid results in the formation of an ester.
Statement I is correct because p-nitrobenzoic acid is more reactive than benzoic acid in an acid-catalyzed esterification reaction. The presence of a nitro group (-NO2) in p-nitrobenzoic acid increases the electron-withdrawing ability of the aromatic ring. This electron-withdrawing group enhances the acidity of the carboxylic acid, making it more likely to donate a proton to the alcohol. As a result, p-nitrobenzoic acid reacts more readily with the alcohol to form the ester.
Statement II is also correct because the rate-determining step in Fischer's esterification reaction is the nucleophilic attack of the alcohol on the protonated acid intermediate. In this step, the nucleophile (alcohol) attacks the electrophilic carbon of the protonated acid, leading to the formation of the ester. This step determines the overall rate of the reaction and is influenced by factors such as the nature of the alcohol and the acidity of the carboxylic acid.
The explanation of Statement II provides a clear understanding of why p-nitrobenzoic acid is more reactive than benzoic acid in the esterification reaction. The electron-withdrawing nitro group increases the acidity of the carboxylic acid, making it a better proton donor and enhancing the reaction with the alcohol.
In conclusion, both Statement I and Statement II are correct, and Statement II provides the correct explanation for Statement I.
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Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?
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Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?.
Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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ample number of questions to practice Statement I : p-nitrobenzoic acid is more reactive than benzoic acid in acid catalysed esterification reaction.Statement II : Rate determining step in Fischer’s esterification reaction of carboxylic acid in nucleophilic attack alcohols on protonated acid.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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