Reduction Oxidation Reactions - Any reaction where...

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Any reaction where electrons are transferred between reactants is called an reduction-oxidation  reaction or redox reaction. These are reactions where one substance wants an electron so badly that it takes it  away from another substance. Whether or not it succeeds depends on who it meets. For example, consider the  reaction FeCl 2 (aq)  + CeCl 4 (aq)    FeCl 3 (aq)  + CeCl 3 (aq) What happened here? If we remove the spectator ions and write the net ionic equation we find: Fe 2+ (aq)  + Ce 4+ (aq)    Fe 3+ (aq)  + Ce 3+ (aq) Ce 4+  took an electron from  Fe 2+ ! This is an oxidation/reduction reaction. In this  example,  Fe 2+  is oxidized and  Ce 4+  is reduced. The charge of  Fe  went from +2 to +3, that is, it lost an  electron. This process is called oxidation. Oxidation: The loss of an electron by a substance. Likewise, the charge of 
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This note was uploaded on 10/13/2011 for the course CHEMISTRY 121 taught by Professor Staff during the Fall '10 term at Bangladesh University of Eng and Tech.

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Reduction Oxidation Reactions - Any reaction where...

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