Describe6 marksChallenge
A liquid suspected to be a carbonyl compound is mixed with 2,4-dinitrophenylhydrazine reagent and warmed. An orange precipitate forms. In a separate experiment, the liquid is warmed with Fehling's solution and no change is observed. A sample of the liquid is warmed with alkaline iodine solution and a yellow precipitate forms.
Describe the information these three tests give about the liquid, and explain what the results show about the structure of the carbonyl compound present.