摘要：19．实验室制C2H4及主要副反应 CH3CH2OHCH2=CH2↑+H2O 2CH3CH2OHCH3CH2-O-CH2CH3+H2O CH3CH2OH+2H2SO4(浓)2C+2SO2↑+5H2O C+2H2SO4CO2↑+2SO2↑+2H2O

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