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E
Question Practice

What is the overall electrochemical reaction when iron rusts?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 12
Chemistry
Chemistry - I
Electrochemistry
Question Bank

What is the overall electroche...

Single Answer MCQ
Q-00083208

What is the overall electrochemical reaction when iron rusts?

1

Fe → Fe²⁺ + 2e⁻

2

O₂ + 4e⁻ + 4H⁺ → 2H₂O

3

2Fe + O₂ + 4H⁺ → 2Fe²⁺ + 2H₂O

4

2Fe + 3O₂ → 2Fe₂O₃

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