Mn⁺², Al⁺³, Ni⁺² and Au⁺³ metals will be reduced at the cathode because their reduction potential is higher than water.
The group of potentials known as standard electrodes or standard cells includes the standard reduction potential. The standard cell potential is the difference in potential between the cathode and anode. For more information, view Cell Potentials. The standard potentials are all calculated at 298 K, 1 atm, and 1 M solutions.
Standard oxidation and reduction potentials are extremely similar to one another. A species' susceptibility to experience oxidation under typical conditions. It is also written in a half-reactionary manner. The standard oxidation potential and the standard reduction potential have the opposite sign for the same chemical species.
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