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Topic: Oxidation Reduction Reaction  (Read 3825 times)

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Offline XxslbabesxX

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Oxidation Reduction Reaction
« on: October 04, 2005, 10:40:17 PM »
lol ok, another redox question:

My textbook says the following is a redox reaction.

O3 +No--> O2 + NO2

Yet the oxidation number for
O3 is 0 and for O2 it is also 0. The numbers don't chage so how can this be a redox equation?
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CJP4

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Re:Oxidation Reduction Reaction
« Reply #1 on: October 04, 2005, 10:49:09 PM »
Ah, but you didn't look at the oxidation number for oxygen in NO2

The oxidation in the reaction side goes from

O3 w/ oxidation # 0 to NO2 oxidation # 2-

So it is reduced by 2.

You have to examine the whole problem :)
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Offline mike

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Re:Oxidation Reduction Reaction
« Reply #2 on: October 04, 2005, 10:50:46 PM »
O3 + 2H+ + 2e- ---> O2 + H2O
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Offline Borek

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Re:Oxidation Reduction Reaction
« Reply #3 on: October 05, 2005, 05:44:09 AM »
Ozone and hydrogen peroxide reactions are the ones showing that oxidation numbers are only an approximate concept that sometimes fails. Then you have to stick to half reactions.
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