electrochemistry

Question: In corrosion of iron



1) An electrochemical (Galvanic cell) is formed in which $Fe$ acts as anode and cathode where ${{O}_{2}}$ is reduced
2) Electrons flow from anode to cathode through the metal while ions flow through the water droplets
3) Dissolved ${{O}_{2}}$ oxidises $F{{e}^{2+}}$ to $F{{e}^{3+}}$ before it is deposited as rust $(F{{e}_{2}}{{O}_{3}}.{{H}_{2}}O)$
4) All of the above takes place
Solution: Explanation: No Explanation
Corrosion and miscellaneous questions

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