Exam 5 Review - Exam 5 Review Oxidation-Reduction Reactions...

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Exam 5 Review Oxidation-Reduction Reactions The driving force of oxidations-reduction (redox) reactions is the transfer of electrons A reactant that gains electrons is reduced A reactant that loses electrons is oxidized o OIL RIG Oxidation Numbers The charge on an element, ion or element in a covalent bond is known as its oxidation number or oxidations state Examples o Na+ has oxidations state of +1 o F 2 has an oxidations state of 0 o S8 has an oxidations state of 0 Electron Transfer Oxidizing agents are the reactants that are reduced o They accept the electrons given up by the reducing agent o Good oxidizing agents are nonmetals (get reduced) Reducing agents are the reactants that are oxidized o They give up electrons to reduce the oxidizing agent o Good reducing agents are group 1 metals, kind of group 2 metals, and any active transition metals Half-Reactions In redox reactions, the reactant transfer electrons To determine the oxidizing agent and reducing agent, we can divide the reaction into half- reactions Balancing redox Reactions: The Half-Reaction Method (only method you need to know)
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This note was uploaded on 04/30/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.

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Exam 5 Review - Exam 5 Review Oxidation-Reduction Reactions...

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