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Question
What is meant by the following term? Give an example of the reaction in the following case.
Acetal
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Solution
Gem-dialkoxy compounds in which two alkoxy groups are present on the terminal carbon atom are called acetals. These are formed when the aldehyde reacts with two equivalents of monohydric alcohol in the presence of dry hydrogen chloride.

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| (i) | ![]() |
| (ii) | ![]() |
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