Home › CBSE Class 12 (Science) › Chemistry › Aldehydes, Ketones and Carboxylic Acids › What does dry HCl do in acetal formation?
What does dry HCl do in acetal formation?
AIt dehydrates the alcohol
BIt acts as the nucleophile
CIt oxidises the aldehyde
DIt protonates carbonyl oxygen
Answer & Solution
Correct answer: D. It protonates carbonyl oxygen
Protonation of oxygen creates a positive centre at carbon, so the weakly nucleophilic alcohol can attack.
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