The oxidation reaction that takes place in the SHE is?
Correct answer: A. H2(gas) ⟶ 2H+(aq) + 2e-
- A. H2(gas) ⟶ 2H+(aq) + 2e-
- B. 2H2O(I) → 2H2(g) + O2(g)
- C. 2H+(aq) + 2e- → H2(gas)
- D. 2H2O(I) + 2e- → OH-(aq) + H2(g)
Explanation
The Standard Hydrogen Electrode (SHE) serves as a reference for measuring electrode potentials. In the SHE, hydrogen gas (H2) undergoes oxidation, losing electrons to form hydrogen ions (H+). This oxidation reaction is represented by the equation: H2(g) ⟶ 2H+(aq) + 2e-. Option A correctly represents this process.Option B describes the electrolysis of water, not related to the SHE. Option C is the reverse reaction, representing reduction, not oxidation. Option D involves a different reaction where water is reduced, irrelevant to the SHE.
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