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In wet corrosion the metal is attacked at the

  • A.anodic areas, where hydrogen is liberated
  • B.cathodic areas, where the oxide film forms
  • C.anodic areas, where it dissolves as ions
  • D.cathodic areas, where it dissolves as ions

Answer: C

Oxidation of the metal to its ions is by definition the anodic reaction, and the electrons released travel through the metal to the cathodic areas. Whatever consumes them there determines which of the two wet mechanisms is operating.

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