Which of the following statements about ethanoic acid is correct?
Correct: D
A) Ethanoic acid (acetic acid) is a weak acid, not a strong one. B) It reacts with sodium carbonate to produce carbon dioxide gas (not hydrogen gas), a common test for acids (2CH3COOH + Na2CO3 → 2CH3COONa + H2O + CO2). C) It has a characteristic vinegar smell, not similar to chloroform. D) Dilute ethanoic acid (5-8% solution) is known as vinegar and is widely used as a food preservative.