Answer: ethanoic acid.
- A methanoic acid
- B ethanoic acid
- C propanoic acid
- D ethanol
Correct answer: B. ethanoic acid
Explanation: CH<sub>3</sub>COOH has two carbons in the acid, so it is ethanoic acid (common name acetic acid).
Curved arrows show the nucleophile attacking the carbonyl carbon while the C=O pi electrons move onto oxygen, giving a tetrahedral alkoxide intermediate.
Concept context
Aldehydes, ketones, carboxylic acids, and their derivatives (esters, amides, acid chlorides). Key reactions include nucleophilic addition, Aldol condensation, Cannizzaro, and Claisen. Very heavily tested in JEE and NEET.
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