When acetaldehyde reacts with phenylhydrazine, it forms

• A. Acetaldoxime
• B. Hydrazone
• C. Phenylhydrazone
• D. Methylamine

When acetaldehyde reacts with phenylhydrazine, the product formed is known as a hydrazone. Specifically, the correct answer is C. Phenylhydrazone.

Understanding the Reaction

This reaction involves the nucleophilic attack of phenylhydrazine on the carbonyl group of acetaldehyde, leading to the formation of a stable hydrazone compound.

Key Points

• Acetaldehyde is an aldehyde with the formula CH3CHO.
• Phenylhydrazine is a reagent commonly used in organic chemistry for the identification of carbonyl compounds.
• The resulting phenylhydrazone can be used for further chemical analysis or synthesis.

In summary, the interaction between acetaldehyde and phenylhydrazine results in the formation of phenylhydrazone, making option C the correct choice.