C2H4 -> C2H5OH -> C2H4 -> CH3CHO -> CH3COOH -> H2O
C2H4 + H2O = C2H5OH (над = H2SO4) C2H5OH = C2H4 + H2O (тоже H2SO4) C2H4 + [O] = CH3-CHO (cat PdCl2) CH3-CHO + 2Cu(OH)2 = CH3COOH + Cu2O + 2H2O CH3COOH + 2O2 = 2CO2 + 2H2O