一共5种1. 置换2CH3CH2OH+2Na=2CH3CH2Na+H22. 催化氧化2CH3CH2OH+O2=Cu加热=2CH3CHO+2H2O3. 取代CH3CH2OH+HCl=加热=CH3CH2Cl+H2O4. 消去CH3CH2OH=浓H2SO4 170度= CH2=CH2+H2O5. 酯化CH3CH2OH+CH3COOH=浓H2...