How to prepare acetaldehyde?
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In order to obtain pure acetaldehyde, 10 g of acetaldehyde-ammonia trimer are dissolved in 10 ml of water. This solution is treated with a cooled mixture of 15 g of concentrated sulfuric acid and 20 ml of water, and distilled by gentle heating collecting fraction boiling at 21° C.
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Explanation:
In order to obtain pure acetaldehyde, 10 g of acetaldehyde-ammonia trimer are dissolved in 10 ml of water. This solution is treated with a cooled mixture of 15 g of concentrated sulfuric acid and 20 ml of water, and distilled by gentle heating collecting fraction boiling at 21° C.
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