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Asked in UHS MDCAT 2009 2009Moderate

When acetone is heated in the presence of K2Cr2O7/H2SO4, the products formed are:

Correct answer: B. Acetic Acid and Formic Acid

  • A. Maleic Acid and Fumaric Acid
  • B. Acetic Acid and Formic Acid
  • C. Formic Acid and Oxalic Acid
  • D. Oxalic Acid and Acetic Acid

Explanation

Explanation:This is an oxidation reaction. Acetone is a symmetrical ketone. Hence, when acetone is heated in the presence of K2Cr2O7/H2SO4, the products formed are acetic acid and formic acid. This option is not correct. The products formed are acetic acid and formic acid, not Maleic acid and fumaric acid.This option is also incorrect. The products formed are acetic acid and formic acid, not formic acid and oxalic acid. This option is also incorrect. The products formed are acetic acid and formic acid, not oxalic acid and acetic acid.

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About Reactivity of Aldehydes and Ketones

The polar carbonyl group makes aldehydes and ketones undergo nucleophilic addition, reduction and condensation reactions. Aldehydes are generally more reactive and oxidise readily to carboxylic acids, whereas ketones resist mild oxidation; reactions with hydrogen cyanide, sodium bisulfite and 2,4-DNP help identify their behaviour.

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