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MHT CET202617 April 2026Evening ShiftChemistryGeneral Organic ChemistryActual

What is the name of second lower homologue of CH ₃( CH ₂)₂ COOH ?

Options

  1. AMethanoic acid
  2. BEthanoic acid
  3. CPropanoic acid
  4. DPentanoic acid

Correct answer

B. Ethanoic acid

Step-by-step solution

The given compound is CH ₃( CH ₂)₂ COOH , which contains 4 carbon atoms and is named butanoic acid. Homologues in a series differ by a successive - CH ₂- unit. The first lower homologue has one less - CH ₂- unit, which is CH ₃ CH ₂ COOH (propanoic acid). The second lower homologue has two less - CH ₂- units, which is CH ₃ COOH (ethanoic acid). Answer: Ethanoic acid

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