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← ScienceWhich electrochemical outcome occurs during the corrosion of galvanized steel in a marine environment?
A)Zinc ions oxidize to form zinc oxide✓
B)Iron forms hydroxide in direct reaction
C)Chloride accumulates slowing the iron oxidation
D)Oxygen reduction increases hydrogen evolution
💡 Explanation
When galvanized steel corrodes, sacrificial oxidation of zinc occurs, forming zinc ions. These mobile ions then react with oxygen and water, promoting the creation of zinc oxide, protecting underlying steel through a passivation layer. Therefore zinc ions form zinc oxide, creating protection, rather than iron forming hydroxide, chloride accumulating or increased hydrogen evolution which are less dominant corrosion mechanisms.
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