Feedback new - Feedback The spontaneous cell reaction is the one in which the strongest oxidizing agent is reduced at the cathode and the strongest

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Feedback: The spontaneous cell reaction is the one in which the  strongest oxidizing agent is reduced at the cathode  and the  strongest reducing agent is oxidized at the anode For a spontaneous cell reaction, E o cell  will be positive. The  strongest oxidizing agent has the largest standard reduction potential. The half-cell with the largest  standard reduction potential is the cathode.  Therefore, the strongest oxidizing agent is  Cu 2+ , and the reduction  reaction in the cathode compartment is: Cu 2+ (aq)  +  2 e -   Cu(s)   E o red  =  0.337 The strongest reducing agent is paired with the oxidizing agent that has the smallest standard reduction potential.  Ni 2+ (aq)  +  2 e -   Ni(s)   E o red  =  -0.250 Therefore, the strongest reducing agent is  Ni  and the oxidation reaction in the anode compartment is: Ni(s)   Ni 2+ (aq)  +  2 e -   E o ox  =  0.250 The oxidation potential is equal in magnitude and opposite in sign to the reduction potential. The spontaneous cell reaction is obtained by adding the two half reactions. If necessary, each half reaction is  multiplied through by an integer so that the electrons will cancel. 
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This note was uploaded on 07/01/2010 for the course CHM 116 taught by Professor Negeishi during the Fall '08 term at Purdue University-West Lafayette.

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Feedback new - Feedback The spontaneous cell reaction is the one in which the strongest oxidizing agent is reduced at the cathode and the strongest

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