Question

Convert acetic acid to acetaldehyde

Answer 1

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Answer 2

Answer:

Firstly you convert -OH group in acetic acid to Cl and use PCl5 for this reaction. CH3COOH+PCl5 to gives CH3COCl and after these use H2/Pd in present of BaSO4 to convert Cl group in CH3COCl to CH3CHO.