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In a set of given reactions, acetic acid yielded a product C. CH3COOH + PCl5 → A → C6H6 → B → C2H5MgBr → C Product C would be:

1. C2H5
2. CH3—C(OH)C6H5
3. CH3COOC2H5
4. CH3CH(OH)C6H5

Correct answer: CH3—C(OH)C6H5

Solution

The reaction sequence involves the conversion of acetic acid to acetyl chloride (A), which reacts with benzene to form acetophenone (B). Acetophenone then reacts with ethyl magnesium bromide (Grignard reagent) to form CH3—C(OH)C6H5 (C).

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