二、实验原理 NaBr H2SO HBr NaHSO4 CHCH2OH HBr-CH3CH2Br H2O 2CH CH2OH-H2SO4 CH CH2OCHCH+HO H2SO4 CH3CH2OH→CH=CH2+H2O 2HBr H2SO4-Br2 SO2+2H2O二、实验原理 NaBr + H2 SO4 HBr + NaHSO4 CH3 CH2 OH + HBr CH3 CH2 Br + H2 O 2CH3 CH2 OH CH3 CH2 OCH2 CH3 + H2 O CH3 CH2 OH CH2 CH2 + H2 O 2HBr + H2 SO4 Br 2 + SO2 + 2H2 O H2 SO4 H2 SO4