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Oxidation Reaction\Reduction Reaction.

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darkeyez's version from 2016-10-26 16:46

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4Na(S) + O2(G) → 2Na2O(S)Oxidation Reaction: Na → Na+ + e-. Reduction Reaction: O2(g) + 4e-→ 2O2-2*Half Reactions. Oxidizing Agent: one which is reduced like O2. Reducing Agent: one which itself gets oxidized.
Redox Reaction: 2Sr + O2 → 2 SrOOxidizing Agent: 2Sr (0) → 2SrO (+2). Reduction Reaction: O2(g) (0) + 2 SrO (-2)
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