What will reaction between hydrazine dinitro benzene and 2-butanone produce (reagent H+)?
1 Answer
Jan 28, 2016
The product will be butan-2-one 2,4-dinitrophenylhydrazone.
Explanation:
2,4-Dinitrophenylhydrazine is often used as a qualitative test for aldehydes and ketones.
A bright orange or yellow precipitate shows the presence of the carbonyl group of an aldehyde or ketone.
The precipitate is called a 2,4-dinitrophenylhydrazone.
With butan-2-one, the product is butan-2-one 2,4-dinitrophenylhydrazone, m.p. 115 °C.
The hydrazone derivatives have characteristic melting points, so they can be used to identify the original aldehyde or ketone.
