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最佳答案:负极:2H+ +2e- = H2正极:4OH-4e- = 2H2O + O2总的:2H2O = 2H2 + O2
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最佳答案:阳极:Cu -2e==Cu2+阴极 :2H2O +2e==H2 +2OH-总反应 Cu +2H2O ==Cu(OH)2 +H2
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最佳答案:2NaCl+2H2O=2NaOH+2H2+2Cl2H2O=2H2+O2Gu+2Na+=Gu2+ +2Na2Na2O2+2H2O=4NaOH+O2SiO2+2Na