For the H+/H2 couple at 25°C with E° = 0 V, what is the electrode potential at pH 7?

• A. E ≈ -0.10 V
• B. E ≈ 0.000 V
• C. E ≈ +0.414 V
• D. E ≈ -0.414 V

Answer: (D)