The electrode potential of standard hydrogen electrode (SHE) fixed is

CONCEPT:

Standard Hydrogen Electrode (SHE)

• The Standard Hydrogen Electrode (SHE) is used as a reference electrode in electrochemical cells.
• The electrode potential of the SHE is defined as 0 volts under standard conditions.
• It is used as a standard to measure the electrode potentials of other electrodes.

EXPLANATION:

• The Standard Hydrogen Electrode (SHE) is based on the half-reaction:

  H₂(g) → 2H⁺(aq) + 2e^-

• Under standard conditions (1 M H⁺ ion concentration, 1 atm H₂ gas pressure, and 25°C), the electrode potential of the SHE is assigned a value of 0 V.
• This means that, by definition, the SHE has an electrode potential of 0 V and serves as the baseline for measuring the electrode potentials of other half-cells.

Therefore, the electrode potential of the Standard Hydrogen Electrode (SHE) is 0 V.