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Standard electrode potential is a measure of equilibrium potential.
Hydrogen ions in the standard solution accept electrons to form hydrogen gas.
Hydrogen gas can dissolve in solution to form hydrogen ions.
The standard conditions for measuring standard electrode potential are 25°C and 1 atm.
The standard hydrogen electrode is set at a value of 1.0 V.
Standard electrode potential can be obtained using a reference half-cell.
Hydrogen gas is used as the cathode in the standard hydrogen electrode.
Cu²⁺ + 2e⁻ → Cu is a half-equation for reduction.
Zn²⁺ is a stronger oxidizing agent than Cu²⁺.
Zn + Cu²⁺ → Zn²⁺ + Cu is a redox reaction.
A more positive E° value indicates that a chemical species is easily oxidized.
The zinc electrode is the cathode in a chemical cell with the standard hydrogen electrode.
Standard conditions for the standard hydrogen electrode include a pressure of 1 atm.
The strength as an oxidizing agent follows the order Cu²⁺ > H⁺ > Zn²⁺.
Zn is most easily oxidized according to E° values.