Q.

Acidified KMnO4 is decolourized by _____?

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a

Br2

b

O3

c

HCl

d

Br

answer is A.

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Detailed Solution

Following redox reaction occursKMnO4+Br2+H+→Mn+2 + Br-+H2OThe purple colour of KMnO4 is gone when it is converted into colourless Mn+2
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Acidified KMnO4 is decolourized by _____?