NEET2018Chemistry-Redox Reactions

NEET 2018 Chemistry Disproportionation Reactions MCQ Question

Type: MCQ-conceptual-Hard-Class 11

Consider the change in oxidation state of bromine corresponding to different emf values as shown in the diagram below: BrO₃⁻ 1.82 V\overset{1.82 \text{ V}}{\longrightarrow} BrO₂⁻ 1.5 V\overset{1.5 \text{ V}}{\longrightarrow} HBrO 1.595 V\overset{1.595 \text{ V}}{\longrightarrow} Br₂ 1.0652 V\overset{1.0652 \text{ V}}{\longrightarrow} Br⁻ Then the species undergoing disproportionation is __________.

A

BrO₃⁻

B

BrO₂⁻

C

Br₂

D

HBrO

Correct Answer

Option D

Detailed Explanation

HBrO undergoes disproportionation as it can be both oxidized and reduced, forming Br₂ and Br⁻.

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