323423
Assertion : Acetamide has more polar group than in ethyl acetoacetate. Reason : \(\mathop {\text{N}}\limits^{ \cdot \,\, \cdot } {{\text{H}}_2}\) is more electron donating than \(\ddot{\mathrm{O}} \mathrm{C}_{2} \mathrm{H}_{5}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetamide is more polar than ethyl acetoacetate due to the higher polarity introduced by the amide functional group containing a carbonyl \((\mathrm{C}=\mathrm{O})\) group, resulting in a significant polar contribution compared to the ethyl group in ethyl acetoacetate. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323424
Identify the product ' \(\mathrm{B}\) ' in the following series of reactions.
323425
In a Claisen condensation reaction (when an ester is treated with a strong base)
1 a proton is removed from the \(\alpha\)-carbon to form a resonance stabilised carbanion of the ester
2 carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule
3 a new \(\mathrm{C}-\mathrm{C}\) bond is formed
4 all of the above statements are correct.
Explanation:
When two molecules of an ester undergo a condensation reaction, the reaction is called as Claisen condensation and product is a \({\rm{\beta }} - \) keto ester.
Mechanism : Step I
Step II
Step III
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323426
Methyl acetate and ethyl acetate can be distinguished by
1 Hot alkaline \(\mathrm{KMnO}_{4}\)
2 Neutral \(\mathrm{FeCl}_{3}\)
3 Iodoform test
4 None of the above
Explanation:
Iodoform test is carried out in hot alkaline medium. Under these conditions, the esters will hydrolyse to give corresponding alcohols. Now, ethanol will respond to iodoform test and gives yellow ppt. of iodoform while, methanol will not give iodoform test.
AIIMS - 2007
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323427
Which of the following compounds when heated with \(\mathrm{CO}\) at \(150^{\circ} \mathrm{C}\) and \(500 \mathrm{~atm}\) pressure in presence of \(\mathrm{BF}_{3}\) forms ethyl propionate?
323423
Assertion : Acetamide has more polar group than in ethyl acetoacetate. Reason : \(\mathop {\text{N}}\limits^{ \cdot \,\, \cdot } {{\text{H}}_2}\) is more electron donating than \(\ddot{\mathrm{O}} \mathrm{C}_{2} \mathrm{H}_{5}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetamide is more polar than ethyl acetoacetate due to the higher polarity introduced by the amide functional group containing a carbonyl \((\mathrm{C}=\mathrm{O})\) group, resulting in a significant polar contribution compared to the ethyl group in ethyl acetoacetate. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323424
Identify the product ' \(\mathrm{B}\) ' in the following series of reactions.
323425
In a Claisen condensation reaction (when an ester is treated with a strong base)
1 a proton is removed from the \(\alpha\)-carbon to form a resonance stabilised carbanion of the ester
2 carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule
3 a new \(\mathrm{C}-\mathrm{C}\) bond is formed
4 all of the above statements are correct.
Explanation:
When two molecules of an ester undergo a condensation reaction, the reaction is called as Claisen condensation and product is a \({\rm{\beta }} - \) keto ester.
Mechanism : Step I
Step II
Step III
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323426
Methyl acetate and ethyl acetate can be distinguished by
1 Hot alkaline \(\mathrm{KMnO}_{4}\)
2 Neutral \(\mathrm{FeCl}_{3}\)
3 Iodoform test
4 None of the above
Explanation:
Iodoform test is carried out in hot alkaline medium. Under these conditions, the esters will hydrolyse to give corresponding alcohols. Now, ethanol will respond to iodoform test and gives yellow ppt. of iodoform while, methanol will not give iodoform test.
AIIMS - 2007
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323427
Which of the following compounds when heated with \(\mathrm{CO}\) at \(150^{\circ} \mathrm{C}\) and \(500 \mathrm{~atm}\) pressure in presence of \(\mathrm{BF}_{3}\) forms ethyl propionate?
323423
Assertion : Acetamide has more polar group than in ethyl acetoacetate. Reason : \(\mathop {\text{N}}\limits^{ \cdot \,\, \cdot } {{\text{H}}_2}\) is more electron donating than \(\ddot{\mathrm{O}} \mathrm{C}_{2} \mathrm{H}_{5}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetamide is more polar than ethyl acetoacetate due to the higher polarity introduced by the amide functional group containing a carbonyl \((\mathrm{C}=\mathrm{O})\) group, resulting in a significant polar contribution compared to the ethyl group in ethyl acetoacetate. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323424
Identify the product ' \(\mathrm{B}\) ' in the following series of reactions.
323425
In a Claisen condensation reaction (when an ester is treated with a strong base)
1 a proton is removed from the \(\alpha\)-carbon to form a resonance stabilised carbanion of the ester
2 carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule
3 a new \(\mathrm{C}-\mathrm{C}\) bond is formed
4 all of the above statements are correct.
Explanation:
When two molecules of an ester undergo a condensation reaction, the reaction is called as Claisen condensation and product is a \({\rm{\beta }} - \) keto ester.
Mechanism : Step I
Step II
Step III
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323426
Methyl acetate and ethyl acetate can be distinguished by
1 Hot alkaline \(\mathrm{KMnO}_{4}\)
2 Neutral \(\mathrm{FeCl}_{3}\)
3 Iodoform test
4 None of the above
Explanation:
Iodoform test is carried out in hot alkaline medium. Under these conditions, the esters will hydrolyse to give corresponding alcohols. Now, ethanol will respond to iodoform test and gives yellow ppt. of iodoform while, methanol will not give iodoform test.
AIIMS - 2007
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323427
Which of the following compounds when heated with \(\mathrm{CO}\) at \(150^{\circ} \mathrm{C}\) and \(500 \mathrm{~atm}\) pressure in presence of \(\mathrm{BF}_{3}\) forms ethyl propionate?
323423
Assertion : Acetamide has more polar group than in ethyl acetoacetate. Reason : \(\mathop {\text{N}}\limits^{ \cdot \,\, \cdot } {{\text{H}}_2}\) is more electron donating than \(\ddot{\mathrm{O}} \mathrm{C}_{2} \mathrm{H}_{5}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetamide is more polar than ethyl acetoacetate due to the higher polarity introduced by the amide functional group containing a carbonyl \((\mathrm{C}=\mathrm{O})\) group, resulting in a significant polar contribution compared to the ethyl group in ethyl acetoacetate. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323424
Identify the product ' \(\mathrm{B}\) ' in the following series of reactions.
323425
In a Claisen condensation reaction (when an ester is treated with a strong base)
1 a proton is removed from the \(\alpha\)-carbon to form a resonance stabilised carbanion of the ester
2 carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule
3 a new \(\mathrm{C}-\mathrm{C}\) bond is formed
4 all of the above statements are correct.
Explanation:
When two molecules of an ester undergo a condensation reaction, the reaction is called as Claisen condensation and product is a \({\rm{\beta }} - \) keto ester.
Mechanism : Step I
Step II
Step III
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323426
Methyl acetate and ethyl acetate can be distinguished by
1 Hot alkaline \(\mathrm{KMnO}_{4}\)
2 Neutral \(\mathrm{FeCl}_{3}\)
3 Iodoform test
4 None of the above
Explanation:
Iodoform test is carried out in hot alkaline medium. Under these conditions, the esters will hydrolyse to give corresponding alcohols. Now, ethanol will respond to iodoform test and gives yellow ppt. of iodoform while, methanol will not give iodoform test.
AIIMS - 2007
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323427
Which of the following compounds when heated with \(\mathrm{CO}\) at \(150^{\circ} \mathrm{C}\) and \(500 \mathrm{~atm}\) pressure in presence of \(\mathrm{BF}_{3}\) forms ethyl propionate?
323423
Assertion : Acetamide has more polar group than in ethyl acetoacetate. Reason : \(\mathop {\text{N}}\limits^{ \cdot \,\, \cdot } {{\text{H}}_2}\) is more electron donating than \(\ddot{\mathrm{O}} \mathrm{C}_{2} \mathrm{H}_{5}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Acetamide is more polar than ethyl acetoacetate due to the higher polarity introduced by the amide functional group containing a carbonyl \((\mathrm{C}=\mathrm{O})\) group, resulting in a significant polar contribution compared to the ethyl group in ethyl acetoacetate. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323424
Identify the product ' \(\mathrm{B}\) ' in the following series of reactions.
323425
In a Claisen condensation reaction (when an ester is treated with a strong base)
1 a proton is removed from the \(\alpha\)-carbon to form a resonance stabilised carbanion of the ester
2 carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule
3 a new \(\mathrm{C}-\mathrm{C}\) bond is formed
4 all of the above statements are correct.
Explanation:
When two molecules of an ester undergo a condensation reaction, the reaction is called as Claisen condensation and product is a \({\rm{\beta }} - \) keto ester.
Mechanism : Step I
Step II
Step III
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323426
Methyl acetate and ethyl acetate can be distinguished by
1 Hot alkaline \(\mathrm{KMnO}_{4}\)
2 Neutral \(\mathrm{FeCl}_{3}\)
3 Iodoform test
4 None of the above
Explanation:
Iodoform test is carried out in hot alkaline medium. Under these conditions, the esters will hydrolyse to give corresponding alcohols. Now, ethanol will respond to iodoform test and gives yellow ppt. of iodoform while, methanol will not give iodoform test.
AIIMS - 2007
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323427
Which of the following compounds when heated with \(\mathrm{CO}\) at \(150^{\circ} \mathrm{C}\) and \(500 \mathrm{~atm}\) pressure in presence of \(\mathrm{BF}_{3}\) forms ethyl propionate?
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