Write the reaction equations: a) C – CO – CO2; b) P – P203 – P205; c) Cu – Cu2O – CuO.

The reaction chains will be as follows:
1.C2 + O2 = 2CO (carbon monoxide II);
2CO + O2 = 2CO2 (carbon monoxide IV);
2. P4 + 3O2 = 2P2O3 (phosphorus III oxide);
P2O3 + O2 = P2O5 (phosphorus oxide V);
3.4Cu + O2 = 2Cu2O (copper oxide IV);
Cu2O + O2 = 2CuO (copper oxide II).



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