Select the reagent X from the following choices for this conversion:
Correct answer: B. Acidified Potassium dichromate (VI)
- A. Acidified Potassium hydroxide
- B. Acidified Potassium dichromate (VI)
- C. Acidified Phosphoric acid
- D. Acidified Oxalic acid
Explanation
The reaction above is oxidation of a secondary alcohol into a ketone. As such, an oxidizing agent must be chosen for reagent X. Among the options, 'Potassium dichromate (VI)' is an oxidizing agent so, the correct option is B. Another answer could be 'potassium manganate (VII)', but it is not mentioned in any of the options. The other options do not oxidize alcohols.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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