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Oxidising Reagent and Reducing Reagent

Toluene A. Wh...

Question

Toluene $K M n O_{4} / H_{3} O^{+} - -------- \to A .$ What is A?

A

Acetic acid

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B

Benzene

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C

Benzoic acid

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D

Benzaldehyde

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Solution

The correct option is C Benzoic acid
Oxidation of Alkyl Benzenes: When treated under strong oxidising conditions, benzylic-H systems are oxidised all the way to the carboxylic acid. The alkyl substituent can be methyl-, $1^{o}$ or $2^{o}$ alkyl.
$3^{o}$ alkyl are not oxidised because they lack a benzylic-H (Must have at least 1 benzylic hydrogen.)

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