When solving the chemical equations of this chain, they take the following form:
1) 2Cu + O2 → 2CuO
Here the reaction of interaction of copper and oxygen will take place with the formation of copper (II) oxide. It should be noted that the reaction takes place at a temperature of 400-500 ° C.
2) CuO + H2O → Cu (OH) 2
In this case, an interaction reaction occurs between copper (II) oxide and water. This leads to the formation of a complex compound – copper (II) hydroxide
Coefficients are placed correctly everywhere, nothing needs to be added.
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