Redox Reactions Around Us Reaksi Redoks di Sekitar Kita

1. Corrosion of Iron Metal The rusting prosses in iron can be written in the following equation. 4 Fe(s) + O2(aq) + H2O(l) → Fe2O3.3H2O(l) 3 6 2 -2 +3 OXIDATION REDUCTION

2. Clothes Bleaching 6 NaOCl + H2O → NaCl + NaOH+ O2+ Cl2 2 2 4 2 4 +1 When NaOCl dissolved, it is dissociated into ions, Na+ and OCl-, OCl- ion is reduced into chlorine ion and hydroxide ion 6 NaOCl + H2O → NaCl + NaOH+ O2+ Cl2 2 2 4 2 4 +1 -1

3. The Accumulator Electrocuting Pb + PbO2 + H2SO4 PbSO4 + H2O 4. Redox Reaxtion in Metals Extraction 2 2 2 Fe2O3 + CO → Fe + CO2 3 2 3 Fe2O3 SiO2(s) + C(s) → Si(s) + CO(g) 2 2