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Calculate the standard emf of the cell : Cd|Cd^(2+)|Cu^(2+)|Cu and determine the cell reaction. The standard reduction potential of Cu^(2+)|Cu and Cd^(2+)|Cd^2|Cd are 0.34 V and -0.40 volts respectively. Predict the feasibility of the cell reaction. |
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Answer» Solution :Cell reactions: `{:("Oxidation at ANODE":, Cd(s) to Cd^(2+)(aq) + Cu(s)` `E_("cell")^(@) = (E_("ox")^(@)) + (E_("RED")^(@)) = 0.4 + 0.34 = 0.74 V` emf is +ve , so `DeltaG` is (-)ve, the reaction is feasible. |
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