Disposable batteries Reduction 2NH4++2e'-+ 2NH3+H2 Electrons(e-) Fig 11.8 a common battery dry-cell battery with a Electrons (e-) (cathode) graphite rod Light bulb dload immersed in a paste of ammonium Separator chloride, manganese Carbon and dioxide mixture dioxide, and zinc chloride electrode (anode) Electrons(e-) Oxidation zn Zn2++2e Zncl2(ag)+ 2NH3(g)+Zn(NH3)2Cl2(s 2Mno2(s)+ H2(g)-+Mn2O3(s)+ H2O( Electrode(电极) cathode(阳极): Where chemicals are reduced Anode(阴极): Where chemicals are oxidizedDisposable batteries ZnCl2 (ag) + 2NH3 (g) Zn(NH3 )2Cl2 (s) 2MnO2 (s) + H2 (g) Mn2O3 (s) + H2O (l) Electrode (电极) cathode (阳极): where chemicals are reduced. Anode (阴极): where chemicals are oxidized. Fig 11.8 a common dry-cell battery with a graphite rod immersed in a paste of ammonium chloride, manganese dioxide, and zinc chloride Reduction 2NH4 ++2e- 2NH3+H2 Oxidation Zn Zn2++2e-