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Only One Option Correct Type
Direction (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.
Q.
Which of the following statements is not generally true?
- a)The boiling point of a carboxylic acid is higher than that of its methyl ester
- b)Methyl esters are more reactive acylating agents than their amide counterparts
- c)Amide hydrolysis may be carried out with either strong acid or base catalyst
- d)Fischer esterification of acids with alcohols requires a strong base catalyst
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Only One Option Correct TypeDirection (Q. Nos. 1-26) This section cont...
Fischer esterification is acid catalysed not base catalysed.
Most Upvoted Answer
Only One Option Correct TypeDirection (Q. Nos. 1-26) This section cont...
The Incorrect Statement: Fischer esterification of acids with alcohols requires a strong base catalyst
Explanation:
The Fischer esterification is a chemical reaction that involves the formation of an ester from a carboxylic acid and an alcohol in the presence of an acid catalyst. This reaction is commonly used to synthesize esters and is named after its discoverer, Emil Fischer.
1. Fischer Esterification:
- Fischer esterification involves the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst, typically sulfuric acid (H2SO4).
- The acid catalyst protonates the carboxylic acid, making it more reactive towards nucleophilic attack by the alcohol.
- The alcohol then attacks the protonated carboxylic acid, forming an intermediate known as an acyloxonium ion.
- The acyloxonium ion then loses a water molecule, resulting in the formation of an ester.
2. Strong Base Catalyst:
- A strong base catalyst, such as sodium hydroxide (NaOH), is not used in Fischer esterification.
- In fact, the presence of a strong base catalyst would lead to saponification, where the ester is hydrolyzed to form the corresponding carboxylic acid and alcohol.
- Saponification is the reverse reaction of esterification and occurs under basic conditions.
3. Acid Catalyst in Fischer Esterification:
- The acid catalyst in Fischer esterification serves to protonate the carboxylic acid, increasing its reactivity towards the alcohol.
- The acid catalyst also helps to remove the water molecule that is formed during the reaction, driving the equilibrium towards ester formation.
- Sulfuric acid (H2SO4) is commonly used as the acid catalyst in Fischer esterification reactions.
Conclusion:
In conclusion, the statement that Fischer esterification of acids with alcohols requires a strong base catalyst is not correct. Fischer esterification requires an acid catalyst, typically sulfuric acid, to facilitate the reaction and drive it towards ester formation.
Explanation:
The Fischer esterification is a chemical reaction that involves the formation of an ester from a carboxylic acid and an alcohol in the presence of an acid catalyst. This reaction is commonly used to synthesize esters and is named after its discoverer, Emil Fischer.
1. Fischer Esterification:
- Fischer esterification involves the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst, typically sulfuric acid (H2SO4).
- The acid catalyst protonates the carboxylic acid, making it more reactive towards nucleophilic attack by the alcohol.
- The alcohol then attacks the protonated carboxylic acid, forming an intermediate known as an acyloxonium ion.
- The acyloxonium ion then loses a water molecule, resulting in the formation of an ester.
2. Strong Base Catalyst:
- A strong base catalyst, such as sodium hydroxide (NaOH), is not used in Fischer esterification.
- In fact, the presence of a strong base catalyst would lead to saponification, where the ester is hydrolyzed to form the corresponding carboxylic acid and alcohol.
- Saponification is the reverse reaction of esterification and occurs under basic conditions.
3. Acid Catalyst in Fischer Esterification:
- The acid catalyst in Fischer esterification serves to protonate the carboxylic acid, increasing its reactivity towards the alcohol.
- The acid catalyst also helps to remove the water molecule that is formed during the reaction, driving the equilibrium towards ester formation.
- Sulfuric acid (H2SO4) is commonly used as the acid catalyst in Fischer esterification reactions.
Conclusion:
In conclusion, the statement that Fischer esterification of acids with alcohols requires a strong base catalyst is not correct. Fischer esterification requires an acid catalyst, typically sulfuric acid, to facilitate the reaction and drive it towards ester formation.
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Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer?
Question Description
Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. 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 Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer?.
Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. 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 Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Only One Option Correct TypeDirection (Q. Nos. 1-26) This section contains 26 multiple choice questions. Each question has four choices (a), (6), (c) and (d), out of which ONLY ONE option is correct.Q. Which of the following statements is not generally true?a)The boiling point of a carboxylic acid is higher than that of its methyl esterb)Methyl esters are more reactive acylating agents than their amide counterpartsc)Amide hydrolysis may be carried out with either strong acid or base catalystd)Fischer esterification of acids with alcohols requires a strong base catalystCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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