Introduction to Chemistry
Oxidation: 2H2O → O2 + 4H+ + 4e-; Reduction: 2S + 4e- → 2H2S
Oxidation: 2H2S → 2S + 4H+ + 4e-; Reduction: O2 + 4e- + 4H+ → 2H2O
Oxidation: O2 → 2O + 4e-; Reduction: 2H2S + 4e- → 2S + 2H2
Oxidation: 2S + 4e- → 2H2S; Reduction: O2 + 4H+ → 2H2O + 4e-