解析:3Zn+2K2FeO4+8H2O 3Zn(OH)2+2Fe(OH)3+4KOH
阴极:3Zn(OH)2+6e- = 3Zn + 6OH-
阳极:2Fe(OH)3-6e- +10OH-= 2FeO42- + 8H2O