摘要:共价键断裂有均裂和异裂两种方式.均裂:A:B→A·+B·.异裂:A:B→A++[∶B]-.下列化学反应中发生共价键均裂的是 A.2K+2H2O=2KOH+H2↑ B.2Na+2C2H5OH=2C2H5ONa+H2↑ C.Na2CO3+H2O=NaHCO3+NaOH D.CH3COOH+C2H5OH→CH3COOC2H5+H2O

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