The reduction half reaction occurring in the standard hydrogen electrode is ________. A)H₂ (g, 1 atm) → 2H⁺ (aq, 1M) + 2e^- B)2H⁺ (aq) + 2OH^- → H₂O (l) C)O₂ (g) + 4H⁺ (aq)+ 4e^- → 2H₂O (l) D)2H⁺ (aq, 1M) + 2e^- → H₂ (g, 1 atm) E)2H⁺ (aq, 1M) + Cl₂ (aq) → 2HCl (aq)

Question

Quizplus · Accepted Answer

The reduction half reaction occurring in the standard hydrogen electrode is the reduction of hydrogen ions (H+) to form hydrogen gas (H2). This is represented as follows: 2H+ + 2e- → H2. The reaction shown in choice D is the appropriate representation of this reaction.

The Reduction Half Reaction Occurring in the Standard Hydrogen Electrode