Здійснити перетворення: C2H5OH-->CH3COOH-->CH3COOCH3-->CH3OH-->CO2
CH3CH2OH + O2 → CH3COOH + H2O CH3COOH + CH3OH → CH3COOCH3 + H2O CH3COOCH3 + H2O → CH3OH + CH3COOH 2CH3OH + 3O2 → 2CO2 + 4H2O