Which of These Is a Possible Cathodic Reaction Which Occurs

question 44

Multiple Choice

Which of these is a possible cathodic reaction which occurs during the corrosion of iron?

• A)2Fe(s)→ 2Fe²⁺(aq)+ 4e ⁻
• B)2H⁺(aq)+ 2e ⁻ → H₂(g)
• C)2H₂O(l)+ 2e ⁻ → H₂(g)+ 2OH ⁻ (aq)
• D)O₂(g)+ 2H₂O(l)+ 4e ⁻ → 4OH ⁻ (aq)
• E)SO₂(g)+ O₂(g)+ 2e ⁻ → SO₄^{2 −} (aq)

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