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Redox Reaction

  1. May 10, 2006 #1
    Hey guys, how can I tell whether a reaction is a redox reaction?

    For example:

    2H2O --> 2H2 + O2
     
  2. jcsd
  3. May 10, 2006 #2

    GCT

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    You've got to look at the respective elements and whether there are changes in the oxidation states; oxidation and reduction, electron transfer.
     
  4. May 11, 2006 #3

    Curious3141

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    On the left hand side, what are the respective oxidation numbers for hydrogen and oxygen (in water)?

    On the right hand side, what are the respective oxidation numbers for H and O? (hint : constituent atoms of elemental molecules have zero oxidation number).

    Is there any change in the oxidation number from left to right hand side? So is it a redox reaction?
     
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