Question 17
Alkanoic Acids and EstersThe structural formula of ethanoic acid is
- A.H–C(=O)–OH
- B.CH3–C(=O)–H
- C.CH3–CH2–C(=O)–H
- D.CH3–CH2–C(=O)–OH
- E.CH3–C(=O)–OH
Show the answer and explanation
Answer: E (CH3–C(=O)–OH)
Explanation
Ethanoic acid has two carbons and the –COOH group: CH3COOH. A is methanoic acid, B and C are aldehydes and D is propanoic acid.