题目内容
共价键的断裂有均裂和异裂两种方式,即均裂: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
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A. 2K+2H2O=2KOH+H2↑
B. 2Na+2C2H5OH→2C2H5ONa+H2↑
C. Na2CO3+H2ONaHCO3+NaOH
D. CH3COOH+C2H5OHH2O+CH3COOC2H5
B. 2Na+2C2H5OH→2C2H5ONa+H2↑
C. Na2CO3+H2ONaHCO3+NaOH
D. CH3COOH+C2H5OHH2O+CH3COOC2H5
D
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共价键的断裂有均裂和异裂两种方式,即均裂: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.HCl+NaOH ===" NaCl" + H2O |
D.CH3COOH+C2H5OHH2O+ CH3COOC2H5 |