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Posted by on Tuesday, December 11, 2007 at 10:31pm.

The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressures of oxygen: 0.20 atm of oxygen at one point and 0.0010 atm of oxygen at the other. The reaction is: H2O + Fe (s) + 1/2 O2 (g) --> Fe(OH)2 (s)

  • Chemistry - 1st Yr College Level - , Tuesday, December 11, 2007 at 11:07pm

    Ecell = Eocell - (0.0592/n)*log (more dilute soln/more concd soln).

    Eocell = 0 since the two electrodes are the same; i.e, this is a concentration cell.
    I would plug in 0.001 for more dilute solution and 0.20 for the more concentrated solution and calculate E. I believe n=2.
    Check my thinking.

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