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NEET CHEMISTRYAminesMedium

Question

The reagent 'R' in the given sequence of a chemical reaction is:

A

HIHI

B

CuCN/KCNCuCN/KCN

C

H2OH_2O

D

CH3CH2OHCH_3CH_2OH

Step-by-Step Solution

  1. Context Missing: The specific reaction sequence is not fully provided in the text. However, based on the subtopic of 'Diazonium Salts' and the given options, we can infer the type of reaction.
  2. Reduction of Diazonium Salts: Mild reducing agents such as ethanol (CH3CH2OHCH_3CH_2OH) or hypophosphorous acid (H3PO2H_3PO_2) are used to reduce diazonium salts to corresponding arenes (like benzene).
  3. Reaction Mechanism: In this redox reaction, the diazonium salt is reduced to an arene, releasing nitrogen gas, while ethanol is oxidized to ethanal (CH3CHOCH_3CHO). Chemical Equation: ArN2+Cl−+CH3CH2OH→ArH+N2+CH3CHO+HClArN_2^+Cl^- + CH_3CH_2OH \rightarrow ArH + N_2 + CH_3CHO + HCl
  4. Conclusion: Therefore, ethanol (CH3CH2OHCH_3CH_2OH) is the correct reagent 'R' used for this conversion.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Amines. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYAminesreagentsequencechemicalreaction

More Amines Questions

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The products formed when Aniline reacts with $Br_2$ water, and $NaNO_2/HCl$ will be, respectively:

A.p-Bromoaniline; p-Chloroaniline
B.2,4,6-Tribromoaniline; p-Chloroaniline
C.2,4,6-Tribromoaniline; Benzenediazonium chloride
D.p-Bromoaniline; Benzenediazonium chloride
MediumSolve

Aniline gives a set of the following reactions that yielded a coloured product 'Y'. The structure of 'Y' is: (Note: Reaction scheme is missing from the provided text)

A.Option 1
B.Option 2
C.Option 3
D.Option 4
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The structure of C in the below-mentioned reaction is: (Note: Reaction scheme is missing from the provided text)

A.Option 1
B.Option 2
C.Option 3
D.Option 4
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What results from the electrolytic reduction of nitrobenzene in a highly acidic medium?

A.p-Aminophenol
B.Azoxybenzene
C.Azobenzene
D.Aniline
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The reagent required to convert acetamide into methyl amine is:

A.$NaOH/Br_2$
B.Sodalime
C.Hot conc. $H_2SO_4$
D.$PCl_5$
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D is N-methyl aniline in the given below sequence of reaction: $A \xrightarrow{\text{reduction}} B \xrightarrow{CHCl_3/KOH} C \xrightarrow{\text{reduction}} D$. Structure of A can be:

A.Option 1 (Missing)
B.Nitrobenzene
C.CH3NH2
D.Option 4 (Missing)
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Which of the following statements about primary amines is false?

A.Alkyl amines are stronger bases than aryl amines
B.Alkyl amines react with nitrous acid to produce alcohols
C.Aryl amines react with nitrous acid to produce phenols
D.Alkyl amines are stronger bases than ammonia
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What is the correct order of the methyl-substituted amines' basic strength in an aqueous solution?

A.$CH_3NH_2 > (CH_3)_2NH > (CH_3)_3N$
B.$(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$
C.$(CH_3)_3N > CH_3NH_2 > (CH_3)_2NH$
D.$(CH_3)_2NH > (CH_3)_3N > CH_3NH_2$
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