Potential of SHE is considered as__________________?
Correct answer: A. zero
- A. zero
- B. unity
- C. constant
- D. multiple of 1
Explanation
The standard hydrogen electrode is assigned a standard reduction potential of exactly 0 V, and other standard electrode potentials are measured relative to it. This is a reference convention, not a claim that hydrogen has no electrochemical activity. The likely mistake is choosing constant, which confuses a fixed reference value with the general behaviour of electrode potentials.
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About Standard Hydrogen Electrode
The standard hydrogen electrode provides the reference potential of 0.00 V for measuring electrode potentials. It consists of platinum in contact with hydrogen gas at standard pressure and hydrogen ions at standard concentration, usually at 25°C, and can operate as either the oxidation or reduction half-cell.
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