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Q. Acetals are

AMUAMU 2004

Solution:

Aldehyde react with alcohols in the presence of dry $HCl$ to give gem-dialkoxy compounds. These compounds are called acetals, The addition of one molecule of alcohol to an aldehyde gives a hemiacetal. It is unstable compound and reacts further with another molecule of alcohol to form stable acetals.
- Ketones do not form acetals with monohydric alcohol. They combine with diols to give cyclic to give cyclic ketals.

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