Nickel Silver
Posted March 7, 2010
By admin
5. If I had a nickel - silver electrochemical cell (battery), what is oxidized and what is reduced?
The easiest way is to look at the positions of Ni and Ag in the activity series. Ni is higher than Ag, so Ni metal will replace Ag+ ions. That means that Ni will go into solution to make Ni++ and lose two electrons. The loss of e- is oxidation.
Ag+ will come out of solution to form Ag metal, and gain one electron. The gain of electrons is reduction.
Ni is oxidized, Ag is reduced.
Remember OILRIG as it applies to electrons
Oxidation Is Loss, Reduction Is Gain
You can also look up the reduction potentials in a table and see which combination of oxidation and reduction reactions will produce a positive cell potential.
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