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MDCAT
Chemistry
2021

Chemistry · Aldehydes and Ketones

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

During oxidation of unsymmetrical ketones which atom is oxidized?

Options
  • A

    Carbonyl carbon

  • B

    Carbon attached to smaller number of hydrogen atom

  • C

    Carbon attach to larger number of hydrogen atoms

  • D

    Hydrogen

Explanation

The oxidation of unsymmetrical ketones involves the cleavage of the carbon-carbon bond adjacent to the carbonyl group. The carbon atom that is attached to fewer hydrogen atoms is more electron deficient and therefore more susceptible to oxidation. This carbon atom is oxidized, and the other carbon atom is reduced. The result is the formation of two different carboxylic acids.

The carbonyl carbon is not oxidized during the oxidation of unsymmetrical ketones. The carbon atom that is attached to fewer hydrogen atoms is more electron deficient and therefore more susceptible to oxidation. This carbon atom is oxidized, and the other carbon atom is reduced. The result is the formation of two different carboxylic acids.

The oxidation of unsymmetrical ketones involves the cleavage of the carbon-carbon bond adjacent to the carbonyl group. The carbon atom that is attached to fewer hydrogen atoms is more electron deficient and therefore more susceptible to oxidation. This carbon atom is oxidized, and the other carbon atom is reduced. The result is the formation of two different carboxylic acids.

The carbon atom with a larger number of hydrogen atoms is not oxidized rather carbon atom with fewer hydrogen atoms is oxidized during the oxidation of unsymmetrical ketones. This is because the carbon atom with fewer hydrogen atoms is more electron-deficient and therefore more susceptible to oxidation. The oxidation involves the cleavage of the carbon-carbon bond adjacent to the carbonyl group. The result is the formation of two different carboxylic acids.

During the oxidation of unsymmetrical ketones, hydrogen atoms are not oxidized. The oxidation involves the cleavage of the carbon-carbon bond adjacent to the carbonyl group. The carbon atom with fewer hydrogen atoms is oxidized, and the other carbon atom is reduced. The result is the formation of two different carboxylic acids.

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Tagged under Chemistry · Aldehydes and Ketones · 2021