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Which of the following statement is false:
- a)Cannizzaro reaction is given by aldehydes in presence of alkali
- b)Aldol condensation is given by aldehydes in presence of alkali
- c)Aldol condensation is given by aldehydes and ketones in presence of acids
- d)None of these.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statement is false:a)Cannizzaro reaction is giv...
False Statement in Organic Chemistry
The false statement in organic chemistry is:
Cannizzaro reaction is given by aldehydes in the presence of alkali.
Explanation
Cannizzaro reaction is a redox reaction that occurs in aldehydes having no alpha-hydrogen atoms. In this reaction, one molecule of aldehyde is oxidized to a carboxylic acid, and the other molecule of the same aldehyde is reduced to an alcohol in the presence of a strong base. This reaction is not given by all aldehydes, only those without alpha-hydrogen atoms.
Aldol Condensation
Aldol condensation is a reaction between two carbonyl compounds, such as aldehydes or ketones, in the presence of a base or an acid catalyst. The reaction leads to the formation of a β-hydroxy carbonyl compound. Aldol condensation can be carried out using aldehydes or ketones or a combination of both.
Aldol Condensation with Aldehydes and Ketones
Aldol condensation can also occur between aldehydes and ketones in the presence of an acid catalyst. In this case, the reaction is called crossed aldol condensation. The acid catalyst promotes the formation of an enol intermediate, which then reacts with the carbonyl group of the other reactant to form a β-hydroxy carbonyl compound.
Conclusion
The false statement in organic chemistry is Cannizzaro reaction is given by aldehydes in the presence of alkali. The correct statement is that Cannizzaro reaction is only given by aldehydes without alpha-hydrogen atoms. Aldol condensation is a reaction between two carbonyl compounds, such as aldehydes or ketones, in the presence of a base or an acid catalyst. Aldol condensation can also occur between aldehydes and ketones in the presence of an acid catalyst, called crossed aldol condensation.
The false statement in organic chemistry is:
Cannizzaro reaction is given by aldehydes in the presence of alkali.
Explanation
Cannizzaro reaction is a redox reaction that occurs in aldehydes having no alpha-hydrogen atoms. In this reaction, one molecule of aldehyde is oxidized to a carboxylic acid, and the other molecule of the same aldehyde is reduced to an alcohol in the presence of a strong base. This reaction is not given by all aldehydes, only those without alpha-hydrogen atoms.
Aldol Condensation
Aldol condensation is a reaction between two carbonyl compounds, such as aldehydes or ketones, in the presence of a base or an acid catalyst. The reaction leads to the formation of a β-hydroxy carbonyl compound. Aldol condensation can be carried out using aldehydes or ketones or a combination of both.
Aldol Condensation with Aldehydes and Ketones
Aldol condensation can also occur between aldehydes and ketones in the presence of an acid catalyst. In this case, the reaction is called crossed aldol condensation. The acid catalyst promotes the formation of an enol intermediate, which then reacts with the carbonyl group of the other reactant to form a β-hydroxy carbonyl compound.
Conclusion
The false statement in organic chemistry is Cannizzaro reaction is given by aldehydes in the presence of alkali. The correct statement is that Cannizzaro reaction is only given by aldehydes without alpha-hydrogen atoms. Aldol condensation is a reaction between two carbonyl compounds, such as aldehydes or ketones, in the presence of a base or an acid catalyst. Aldol condensation can also occur between aldehydes and ketones in the presence of an acid catalyst, called crossed aldol condensation.
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Community Answer
Which of the following statement is false:a)Cannizzaro reaction is giv...
It should be c because cross aldol condensation is done between aldehyde and ketone.
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Which of the following statement is false:a)Cannizzaro reaction is given by aldehydes in presence of alkalib)Aldol condensation is given by aldehydes in presence of alkalic)Aldol condensation is given by aldehydes and ketones in presence of acidsd)None of these.Correct answer is option 'D'. Can you explain this answer?
Question Description
Which of the following statement is false:a)Cannizzaro reaction is given by aldehydes in presence of alkalib)Aldol condensation is given by aldehydes in presence of alkalic)Aldol condensation is given by aldehydes and ketones in presence of acidsd)None of these.Correct answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following statement is false:a)Cannizzaro reaction is given by aldehydes in presence of alkalib)Aldol condensation is given by aldehydes in presence of alkalic)Aldol condensation is given by aldehydes and ketones in presence of acidsd)None of these.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement is false:a)Cannizzaro reaction is given by aldehydes in presence of alkalib)Aldol condensation is given by aldehydes in presence of alkalic)Aldol condensation is given by aldehydes and ketones in presence of acidsd)None of these.Correct answer is option 'D'. Can you explain this answer?.
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Solutions for Which of the following statement is false:a)Cannizzaro reaction is given by aldehydes in presence of alkalib)Aldol condensation is given by aldehydes in presence of alkalic)Aldol condensation is given by aldehydes and ketones in presence of acidsd)None of these.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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