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化学用语是学习化学的重要工具,下列用来表示物质变化的化学用语中不正确的是 [ ] A.氢氧燃料电池在碱性介质中的正极反应式:O2+2H2O+4e-=4OH- B.用铁棒作阳极、碳棒作阴极电解饱和氯化钠溶液的离子方程式为:2C1-+2H2OH2↑+Cl2↑+2OH- C.粗铜精炼时,与电源负极相连的是纯铜,电极反应式为:Cu2++2 e-=Cu D.钢铁发生电化学腐蚀的负极反应式:Fe-2e-=Fe2+
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