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Carbylamine test is performed in alcoholic KOH by heating a mixture of :
- a)chloroform and silver powder
- b)trihalogenatedmethane and a primary amine
- c)an alkyl halide and a primary amine
- d)an alkyl cyanide and a primary amine
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Carbylamine test is performed in alcoholic KOH by heating a mixture of...
NOTE : Only primary aliphatic and aromatic amines give this test.
CHX3 + RNH2 + 3KOH → RNC + 3 KX + 3H2O
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Carbylamine test is performed in alcoholic KOH by heating a mixture of...
Carbylamine Test:
The carbylamine test is a chemical test used to distinguish between primary, secondary, and tertiary amines. It is based on the reaction of primary amines with chloroform and alcoholic potassium hydroxide (KOH) to form isocyanides or carbylamines, which have a foul smell.
Procedure:
The test is performed by heating a mixture of the amine and chloroform in the presence of silver powder and alcoholic KOH. The reaction takes place as follows:
R-NH2 + CHCl3 + KOH -> R-N=C (carbylamine) + 3H2O + KCl
Explanation of Options:
a) Chloroform and silver powder: This option involves the reaction of chloroform and silver powder with an unknown compound. It does not specifically mention the presence of a primary amine, so this option is unlikely to give a positive carbylamine test.
b) Trihalogenatedmethane and a primary amine:
This option involves the reaction of a trihalogenatedmethane (such as chloroform) with a primary amine. The presence of a primary amine is crucial for the carbylamine test to give a positive result. Therefore, this option is correct.
c) An alkyl halide and a primary amine: This option involves the reaction of an alkyl halide with a primary amine. The carbylamine test requires the presence of chloroform specifically, so this option is incorrect.
d) An alkyl cyanide and a primary amine: This option involves the reaction of an alkyl cyanide with a primary amine. Again, the carbylamine test requires the use of chloroform, so this option is incorrect.
Conclusion:
The correct option for the carbylamine test is option B, which involves the reaction of a trihalogenatedmethane (such as chloroform) with a primary amine. This reaction leads to the formation of carbylamines, which have a foul smell and can be detected through their odor. This test is useful for distinguishing primary amines from secondary and tertiary amines.
The carbylamine test is a chemical test used to distinguish between primary, secondary, and tertiary amines. It is based on the reaction of primary amines with chloroform and alcoholic potassium hydroxide (KOH) to form isocyanides or carbylamines, which have a foul smell.
Procedure:
The test is performed by heating a mixture of the amine and chloroform in the presence of silver powder and alcoholic KOH. The reaction takes place as follows:
R-NH2 + CHCl3 + KOH -> R-N=C (carbylamine) + 3H2O + KCl
Explanation of Options:
a) Chloroform and silver powder: This option involves the reaction of chloroform and silver powder with an unknown compound. It does not specifically mention the presence of a primary amine, so this option is unlikely to give a positive carbylamine test.
b) Trihalogenatedmethane and a primary amine:
This option involves the reaction of a trihalogenatedmethane (such as chloroform) with a primary amine. The presence of a primary amine is crucial for the carbylamine test to give a positive result. Therefore, this option is correct.
c) An alkyl halide and a primary amine: This option involves the reaction of an alkyl halide with a primary amine. The carbylamine test requires the presence of chloroform specifically, so this option is incorrect.
d) An alkyl cyanide and a primary amine: This option involves the reaction of an alkyl cyanide with a primary amine. Again, the carbylamine test requires the use of chloroform, so this option is incorrect.
Conclusion:
The correct option for the carbylamine test is option B, which involves the reaction of a trihalogenatedmethane (such as chloroform) with a primary amine. This reaction leads to the formation of carbylamines, which have a foul smell and can be detected through their odor. This test is useful for distinguishing primary amines from secondary and tertiary amines.
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Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer?
Question Description
Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. 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 Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer?.
Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. 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 Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Carbylamine test is performed in alcoholic KOH by heating a mixture of :a)chloroform and silver powderb)trihalogenatedmethane and a primary aminec)an alkyl halide and a primary amined)an alkyl cyanide and a primary amineCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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