Moderate

The IUPAC name of HCONH2 is___________?

Correct answer: A. Methanamide

  • A. Methanamide
  • B. Methanoylamine
  • C. Aminoethanol
  • D. Formanide

Explanation

HCONH2 is the amide derived from methanoic acid by replacing the acid hydroxyl group with NH2. Amides are named by changing the -oic acid ending to -amide, so methanoic acid gives methanamide. The likely distractor is formanide, option d, which is not the current systematic IUPAC name.

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