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Which of the following reactions/tests does not help in the distinction between ethylamine and diethylamine?
- a)Carbylamine test
- b)Hinsberg’s test
- c)Reaction with HNO2
- d)Reaction with CH3CH2Br
Correct answer is option 'D'. Can you explain this answer?
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Which of the following reactions/tests does not help in the distinctio...
Reaction with CH3CH2Br:
When ethylamine or diethylamine reacts with CH3CH2Br, the amine group is converted to a quaternary ammonium salt. This reaction does not help in distinguishing between ethylamine and diethylamine as both compounds will give the same product in this reaction.
Carbylamine test:
In this test, primary amines like ethylamine react with chloroform and alcoholic KOH to produce isocyanides which have a foul odor. Diethylamine, being a secondary amine, does not give a positive carbylamine test.
Hinsberg's test:
Hinsberg's test involves the reaction of an amine with benzene sulfonyl chloride. Ethylamine reacts to give a sulfonamide which is insoluble in alkali, whereas diethylamine forms a soluble sulfonamide. This test helps in distinguishing between primary and secondary amines.
Reaction with HNO2:
This test is used to distinguish between primary, secondary, and tertiary amines. Ethylamine reacts with nitrous acid (HNO2) to give a diazonium salt which further reacts to form a stable compound. Diethylamine, being a secondary amine, does not undergo this reaction. This test helps in differentiating between primary and secondary amines.
When ethylamine or diethylamine reacts with CH3CH2Br, the amine group is converted to a quaternary ammonium salt. This reaction does not help in distinguishing between ethylamine and diethylamine as both compounds will give the same product in this reaction.
Carbylamine test:
In this test, primary amines like ethylamine react with chloroform and alcoholic KOH to produce isocyanides which have a foul odor. Diethylamine, being a secondary amine, does not give a positive carbylamine test.
Hinsberg's test:
Hinsberg's test involves the reaction of an amine with benzene sulfonyl chloride. Ethylamine reacts to give a sulfonamide which is insoluble in alkali, whereas diethylamine forms a soluble sulfonamide. This test helps in distinguishing between primary and secondary amines.
Reaction with HNO2:
This test is used to distinguish between primary, secondary, and tertiary amines. Ethylamine reacts with nitrous acid (HNO2) to give a diazonium salt which further reacts to form a stable compound. Diethylamine, being a secondary amine, does not undergo this reaction. This test helps in differentiating between primary and secondary amines.
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Which of the following reactions/tests does not help in the distinctio...
Both ethylamine and diethylamine on reaction with CH3CH2Br eventually gives quaternary ammonium salt. Hence, the alkylation of primary amines cannot be used as a distinction method.
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Which of the following reactions/tests does not help in the distinction between ethylamine and diethylamine?a)Carbylamine testb)Hinsberg’s testc)Reaction with HNO2d)Reaction with CH3CH2BrCorrect answer is option 'D'. Can you explain this answer?
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