notam cetona saturata = CnH2nO, unde CnH2n = radicalul hidrocarbonat
180 g 56 L
Cn-1H2nCO + H2 --> R2OH
M 22,4
=> M = 180x22,4/56 = 72 g/mol
=> Cn-1H2n = 72-28 = 44 g C si H
2x CH3 = 30 => 44-30 = 14 g C si H => CH2
=> cetona = CH3-CH2-CO-CH3, butanona => 1 cetona
aldehide:
C-C-C-C=O
C-C(C)-C=O
=> E)