To prepare acetic acid and formic acid by the oxidation of ketones, an appropriate starting material is:
Correct answer: D. Propanone + Acidified potassium dichromate
- A. Propanone + Tollen's reagent
- B. Butanone + Tollen's reagent
- C. Butanone+ Acidified potassium dichromate
- D. Propanone + Acidified potassium dichromate
Explanation
When propanone is treated with acetic potassium dichromate (K2Cr2O7) in the presence of an acid, such as sulfuric acid (H2SO4), it undergoes oxidation.During the oxidation reaction, the ketone functional group in propanone gets converted into a carboxylic acid. In this case, propanone gets oxidized to acetic acid.The reaction can be represented as follows:Propanone + Acetic potassium dichromate + Acid → Acetic acid + Other products.This process allows us to obtain acetic acid, which is a carboxylic acid commonly found in vinegar, and potentially other products depending on the reaction conditions.
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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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