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Homework Help: Coupled reaction

  1. Dec 14, 2007 #1
    I have studied chemistry thorugh ACS chemistry book published by Freeman.

    Now I am studying chapter 10, Reduction-Oxidation and I have some problem with

    Coupled Redox Reactions, 10.8.

    I couldn`t understand the meaning of coupled reaction.

    When I found the definition of it, it made me confused.

    Plz tell me what the definition of it is and why it is important.

  2. jcsd
  3. Dec 14, 2007 #2
    if i'm not wrong, coupled redox reactions are when half cells are combined. it falls into electro chemistry and redox potentials.

    eg, a hydrogen half cell is:

    2H+(aq) + 2e- <-------> H2(g)

    and a copper half cell is:

    Cu2+(aq) + 2e- <-------> Cu(s)

    when you combine both half cells,

    H2(g) + Cu2+(aq) -------> 2H+(aq) + Cu(s)

    this above reaction should be a coupled redox reaction.
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