What is the action of ethanol on acetaldehyde ? What is the action of ethylene glycol on acetone?

Explanation

Aldehyde reacts with one equivalent of monohydric alcohol in the presence of dry hydrogen chloride to form an intermediate known as hemiacetal, which further adds another molecule of alcohol to form a gem-dialkoxy compound known as acetal. Ketone reacts with ethylene glycol under similar conditions to form cyclic products known as ethylene glycol ketals.