Question
What is the name of second lower homologue of CH _3( CH _2)_2 COOH ?
MHT CET
Chemistry
General Organic Chemistry
2026
MHT CET 2026 (17 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Methanoic acid
- B. Ethanoic acid
- C. Propanoic acid
- D. Pentanoic acid
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
Related: Chemistry — General Organic Chemistry · All PYQ Banks