Question

what happens when acetaldehyde reacts with 2,4 DNPH​

Answer 1

Answer:

An aqueous solution of 2,4-dinitrophenyl hydrazine (DNP) is known as Brady's reagent. It reacts with carbonyl compounds (aldehydes and ketone) to give a coloured precipitate. These precipitates have a sharp melting point. The melting points of the precipitates confirm the carbonyl compounds.

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Answer 2

Answer:

$Acetaldehyde-2,4-DPNH$ is formed as the product.

Explanation:

$2,4-DNPH$ is $2,4-Dinitrophenylhydrazine$.

This reagent when reacts with carbonyl compounds (aldehydes or ketones) forms $2,4-Dinitrophenylhydrazone$ as the product.

This is due to the condensation reaction between the carbonyl compound and $2,4-DNPH$ which results in the formation of $2,4-Dinitrophenylhydrazone$ and water as products.

When acetaldehyde $CH_{3}CHO$ reacts with $2,4-Dinitrophenylhydrazine$; it forms $acetaldehyde 2,4-Dinitrophenylhydrazone$ and water as products.

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