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Why less originated area act as anode in a metal ?

  1. Sep 30, 2013 #1

    ajayguhan

    ajayguhan 148

    Why less originated area act as anode in a metal ?
     
  2. jcsd
    Chemistry news on Phys.org
  3. Sep 30, 2013 #2

    Borek

    Borek 24,978

    Staff: Mentor

    What do you mean by "originated area"?
     
  4. Sep 30, 2013 #3

    ajayguhan

    ajayguhan 148

    Sorry it's oxygenated
     
  5. Sep 30, 2013 #4

    Borek

    Borek 24,978

    Staff: Mentor

    I am still not sure what the question is really about. In what context was it asked?
     
  6. Sep 30, 2013 #5

    ajayguhan

    ajayguhan 148

    A metal undergoes a electrochemical corrosion when exposed to moisture air. The parts which are less exposed to oxygen will act as anode and the more oxygen concentrated area will act as cathode
     
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