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Oxidation number of carbon in (NH4)2C2O4

  1. Feb 3, 2016 #1
    What is the Oxidation Number of Carbon and Nitrogen In this compound (NH4)2C2O4?? i think the oxidation number of carbon is (+4) and Nitrogen is (-4).
    am i true?? or not?
    Note:this is not a homework.
  2. jcsd
  3. Feb 3, 2016 #2


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    I can't judge whether you are true :-)
    I only can tell you that you are wrong.
  4. Feb 3, 2016 #3
    Can you tell me why and where ??
  5. Feb 4, 2016 #4


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    So let's take NH4-: H has oxidation number +1 and the oxidation numbers have to sum up to the total charge of the ion, -1. That gives -3 for nitrogen. Same argument with C2O42-: Oxygen has oxidation number -2. Leaves me with +3 for carbon.
  6. Feb 4, 2016 #5


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    Staff: Mentor

    @DrDu - confusing typo in your post, it is NH4+ - unless it was premeditated :wink:
  7. Feb 4, 2016 #6
    Thank you guys. I thought that carbon has a oxidation number of +4 in this compound.
    Thank you so much for help.
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