摘要: (1) ①2S-2e-S2 ②(NH4)2S2O8+2H2OH2O2+(NH4)2SO4+H2SO4 (2) ①O2+H2O+2e-H+OH- ②过氧化氢受热易分解 (3) Sn2++H2O2+2H+Sn4++2H2O (4) Cl-+4H2O-8e-Cl+8H+

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