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Which of the following is Baeyer’sreagent?

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in Chemistry – Class 12 by (188k points)
Which of the following is Baeyer’sreagent?

(a) Acidified KMnO4

(b) Alkaline KMnO4

(c) Acidified K2Cr2O7

(d) Aqueous KMnO4

The question was posed to me by my college director while I was bunking the class.

The question is from D and F-Block Elements topic in portion D and F-Block Elements of Chemistry – Class 12

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Correct choice is (b) Alkaline KMnO4

Easiest explanation: Alkaline KMnO4 is called Baeyer’s reagent. Baeyer’s reagent is an alkaline solution of cold potassium permanganate, which is a powerful oxidant making this a redox reaction. Reaction with double or triple bonds (-C=C- or -C≡C-) in an organic material causes the colour to fade from purplish-pink to brown. It is a syn addition reaction.

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