Which functional group is present in alkanals?

JAMB Chemistry 2023 76 views

Which functional group is present in alkanals?

  1. Alkyl group (-R)
  2. Hydroxyl group (-OH)
  3. RCHO ✓
  4. Carboxyl group (-COOH)

Explanation

Alkanals are organic compounds also called aldehydes. They contain a carbon atom double-bonded to oxygen and single-bonded to hydrogen, represented as RCHO.

The aldehyde group always appears at the end of a carbon chain. The R represents the rest of the molecule attached to the CHO group.

Common examples include formaldehyde and acetaldehyde. The aldehyde group makes these compounds reactive and gives them characteristic smells ranging from pleasant to pungent.

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