Aldehydes and Ketones

Subdecks (1)

Cards (7)

  • Aldehydes functional group is C = O and is always at the end of a chain suffix = -al
    A) Aldehyde
  • Ketones functional group is C=O and can be anywhere in a molecule
    Suffix = -one
    A) Ketone
  • Test
    Tollens Reagent
    Warm silver nitrate(AgNO3) + excess aqueous NH3(ammonia)
    Aldehydes = Silver mirror is formed
    Aldehydes = no visible change
  • Test
    Fehling's solution
    Blue solution of Copper 2+ ions, aldehydes reduce the Copper 2+ ions to form a red/brown precipitate
    aldehydes = form red/brown precipitate
    ketones = no visible change
  • Aldehydes can be reduced back to primary alcohols
    Ketones can be reduced back to secondary alcohols
    This reaction takes place through nucleophilic addition
    reducing agent = NaBH4