[Help req.] Balancing redox reaction equations

[Noff]

The online tool couldn't do it so if anyone can help with balancing this equation, and provide the two half-reaction equations...

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CH2O + NO3{-} = CO2 + NH4{+}

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NH4{+} + O2 = NO3{-} + H2O

... thanks.

[peter]

Well you need to add the environment and water to balance those:

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CH2O + NO3{-} = CO2 + NH4{+}

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2 CH2O + NO3{-} + 2 H{+} = 2 CO2 + NH4{+} + H2O

Source:
http://www.webqc.org/balance.php?reacti ... B%7D%2BH₂O

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NH4{+} + O2 = NO3{-} + H2O

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 NH4{+} + 2 O2 = NO3{-} + H2O + 2 H{+}

Source:
http://www.webqc.org/balance.php?reacti ... H%7B%2B%7D

Hope this helps,
~peter

[Noff]

Is there no way to balance the original equations without the additions?

Thanks by the way.

[Sam]

Is there no way to balance the original equations without the additions?

Thanks by the way.

Yes, that is absolutely impossible.
A simple poof is to look at charges: they have different sign on both sides in original equations. Therefore whatever coefficients you choose charge will not be balanced!

[Noff]

Once again, thank you.