i

Organic Chemistry

Test For Carbonyl(Aldehyde And Ketone)

Test for carbonyl (aldehyde and ketone):

1)Aldehyde:

  • Fehling’s test:

  • Tollen’s test:

Ketone: Unlike aldehydes, they do not restore the pink colour of the Schiff’s reagent, nor they reduce Fehling’s reagent or ammoniacal silver nitrate solution. A red or yellow crystalline ppt with 2,4-dinitrophenylhydrazine and also with sodium bisulphite reagent.