CH3CH2OH + O2 --催化剂--> CH3COOH + H2O
或
2 K2Cr2O7 + 8 H2SO4 + 3 CH3CH2OH = 3 CH3COOH + 2 Cr2(SO4)3 + 11 H2O + 2 K2SO4
橙红色 绿色