Distinguishing Between Aldehydes And Ketones Flashcards
1
Q
What does a positive result or colour change for each test mean
A
Fehling’s change = presence of aldehyde
Benedict’s change = presence of aldehyde
Tollens change = aldehyde present
All negative = ketone present
2
Q
Reaction with iodine
Conditions
Observations
A
Carbonyl compound added to an alkaline solution of iodine and the mixture is warmed then cooled
Place yellow ppt will form if CH3CO group is present