摘要:电解CuCl2溶液:阳极:2Cl- -2e- =Cl2↑ 阴极:Cu2++2e- =Cu 总反应:CuCl2Cu+Cl2↑42.铜的电解精炼:阳极:Cu-2e- =Cu2+ 阴极:Cu2++2e- =Cu43.电镀铜:阳极:Cu-2e- =Cu2+ 阴极:Cu2++2e- =Cu44.电解饱和食盐水:阳极:2Cl--2e-=Cl2↑ 阴极:2H+ +2e- =H2↑

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