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The IUPAC name of is:

  1. Achloroethane
  2. Bethanoic chloride
  3. Cethanoyl chloride
  4. Dchloroethanone

Answer: C

An acyl halide is named from the acid by replacing -oic acid by -oyl and adding the halide as a separate word. The two-carbon acid is ethanoic acid, so the compound is ethanoyl chloride (acetyl chloride).
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