Standard hydrogen electrode (SHE) is assigned electrode potential:
A+1.00 V
B−1.00 V
C0.00 V
D0.76 V
Answer & Solution
Correct answer: C. 0.00 V
1. By convention, the SHE (1 M H⁺, 1 atm H₂, 25 °C) is assigned E° = 0.00 V exactly.
2. All other electrode potentials are reported relative to this reference.
3. The 0.76 V is the E° for Zn²⁺/Zn (reduction potential −0.76 V; cell against SHE is +0.76 V).
_Source: NCERT Class 11 Chem Ch 8 §8.4 Standard Hydrogen Electrode_
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