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Homework Help: Redox Question

  1. Nov 18, 2005 #1

    mrjeffy321

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    I am trying to write a redox reaction for Lead (II) Acetate electrolytically becoming Lead Dioxde and Lead at the anode and cathod of an electrotic cell.
    I am using the redox reaction of Lead Sulfate in a car battery as a model, but mine doesnt look right.

    I am not sure if I need to include the Aceate ion in the reaction or not, since nothing happens to it.

    Oxidation : Pb+2(aq) + 2H2O(l) ---> PbO2(s) + 4H+(aq) + 2electrons
    Reduction: Pb+2(aq) + 2electrons ---> Pb(s)
    -------------------------------------------------------------------------
    Redox: 2Pb+2(aq) + 2H2O(l) ---> PbO2(s) + Pb(s) + 4H+(aq)

    Does that look right?

    Or perhaps with the acetate,
    2Pb(C2H3O2)2(aq) + 2H2O(l) ---> PbO2(s) + Pb(s) + 4H+(aq) + 2C2H3O2-
     
    Last edited: Nov 18, 2005
  2. jcsd
  3. Nov 19, 2005 #2
    Yes, that's correct.
    2Pb(C2H3O2)2(aq) + 2H2O(l) ---> PbO2(s) + Pb(s) + 4H+(aq) + 4C2H3O2-

    You could write it like that if you want to, but it's not necessary since the acetate ion is, like you said, a spectator ion.

    Let me guess, using PbO2 electrodes for a chlorate cell?
     
    Last edited: Nov 19, 2005
  4. Nov 19, 2005 #3

    mrjeffy321

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    How right you are.
    well, actually, for a perchlorate cell, which I will also use for chlorate (its the same cell).
     
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