N the reaction 2Cu2O (s) → 4Cu (s) + O2 (g) how does the oxidation number of the copper atoms change

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Rodney Villa

Chemistry

6 February, 00:54

N the reaction 2Cu2O (s) → 4Cu (s) + O2 (g) how does the oxidation number of the copper atoms change

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Answer: The oxidation number of Cu decreased

Explanation: In Cu2O equation Cu has an oxidation number of

Cu+1 O-2

then in the product side Cu is represented as a single element.

The rule on oxidation number for an individual element is always O

So Cu has 0 oxidation number.