Determine the structure of the C4H8O compound if it is known that when heated with copper

Determine the structure of the C4H8O compound if it is known that when heated with copper hydroxide, a brick-red precipitate is formed. Write the reaction equation.

According to the rational formula C4H8O, it is clear that the substance contains 4 carbon atoms and a carbonyl group with a polar double bond> C = O. The fact that this is an aldehyde is indicated by a qualitative reaction to the aldehyde group with copper hydroxide, as a result of which an orange-red precipitate of copper oxide precipitates. Such a reaction does not work with ketones. Thus, we find out that C4H8O is butanal (CH3-CH2-CH2-CH = O).

C4H8O + 2Cu (OH) 2 = C3H7COOH + Cu2O + 2H2O.




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