NEETChemistryElectrochemistry
What reaction occurs at the cathode during corrosion of iron?
Options
- A2 Fe (s) → 2 Fe2+ + 4 e-
- BO 2 (g) + 4 H+(aq) + 4 e-→ 2 H 2 O (l)
- C2Fe(s) + O 2 (g) + 4H+(aq) →2Fe2+(aq) + 2 H2O (l)
- DE(cell) =1.67 V
Correct answer
B. O 2 (g) + 4 H+(aq) + 4 e-→ 2 H 2 O (l)
Step-by-step solution
The cathode reaction during corrosion of iron is "Cathode: O 2 (g) + 4 H+(aq) + 4 e-→ 2 H 2 O (l)."