Question

What is the value of standard electrode potential of the standard hydrogen gas electrode?

• A. \(+1.00\) V
• B. \(-1.00\) V
• C. \(0.00\) V
• D. \(+0.50\) V

Hint:

The standard hydrogen electrode is the reference and is assigned zero potential by convention.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
Electrode potentials are always measured relative to a reference, the standard hydrogen electrode (SHE).

Step 2: The SHE
It has platinum in 1 M \(\text{H}^{+}\) with hydrogen gas at 1 bar pressure and 298 K.

Step 3: Conclusion
By international convention its potential for \(\text{H}^{+}+e^{-}\rightarrow\tfrac12\text{H}_{2}\) is taken as 0.00 V.

Final Answer:
The standard electrode potential of the SHE is 0.00 V. \[ \boxed{\text{(C) }0.00\ \text{V}} \]