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Question
On the basis of standard electrode potential values, suggest which of the following reactions would take place? (Consult the book for EΘ value).
\[\ce{Fe + Cd^{2+} -> Cd + Fe^{2+}}\]
Solution
\[\ce{Fe}\] is the cathode and \[\ce{Cd}\] is the anode
For cathode EΘcathode = – 0.44 V
For anode EΘanode = – 0.40 V
EΘcell = – 0.04v
The negative potential prevents easy reaction, so the redox reaction will not occur.
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RELATED QUESTIONS
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Using the standard electrode potential, find out the pair between which redox reaction is not feasible.
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