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Hydrogen Peroxide

  1. May 29, 2005 #1
    What do you get if you use KMnO4 to oxidise hydrogen peroxide?

    and what happens to hydrogen peroxide if it is used as an oxidiser?

    Surely the second one there are two possibilities:

    1) H2O2 + 2e- --> 2OH-
    2) H2O2 + 2H+ + 2e- --> 2H2O
     
    Last edited: May 29, 2005
  2. jcsd
  3. May 29, 2005 #2
    *deleted*.........
     
    Last edited: May 29, 2005
  4. May 29, 2005 #3

    Borek

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    Staff: Mentor

    Hydrogen peroxide may act as oxidizer (in alkalic solution) or as a reducer (in acidic solution).
     
    Last edited by a moderator: Aug 13, 2013
  5. May 29, 2005 #4
    Thanks, but I want to know what hydrogen peroxide itself changes to?
     
  6. May 29, 2005 #5
    In reduction

    H2O2 + 2H+ + 2e -> 2H2O

    In oxidation

    H2O2 +2OH- -> O2 + 2H2O + 2e

    G
     
  7. May 30, 2005 #6
    k. so when does this happen:

    H2O2 + 2e- --> 2OH-
     
  8. May 30, 2005 #7

    Borek

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    Staff: Mentor

    Add 2H+ on both sides of equation :smile:
     
    Last edited by a moderator: Aug 13, 2013
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