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2Cu(s) + 2H2O(l) + O2(g) --> 2Cu(OH)2(s) is not a reaction which happens under any normal conditions. If it did we could say the copper is being oxidised.
Copper and oxygen react to form copper (I) oxide, Cu2O, and copper (II) oxide, CuO. 4Cu + O2 --> 2Cu2O 2Cu + O2 --> 2CuO
2Cu + O2 ---> 2CuOCopper + Oxygen ---> Copper II oxide
Copper sulfide reacts with exces oxygen to produce copper and sulfur dioxide. This could be in the industrial production of copper from copper ores.
Cu2 should be '2Cu' ( two uncombined atoms of copper.) O2- should be 'O2; ( 2 combined atoms of oxygen). When heated 2Cu(s) + O2(g) = 2CuO(s) CuO is copper oxide and appears as a black solid.
2Cu(s)+O2(g) → 2CuO(s)
2Cu (s) + O2 (g) -----------------> 2CuO (s)
2Cu+O2 ---> 2CUO
This is one way of extracting copper from copper (II) oxide. 2CuO + C -> CO2 + 2Cu
2Cu(s) + 2H2O(l) + O2(g) --> 2Cu(OH)2(s) is not a reaction which happens under any normal conditions. If it did we could say the copper is being oxidised.
2Cu + O2 yields 2CuO
2Cu + O2 ==> 2CuO product is copper(II) oxide4Cu + O2 ==> 2Cu2O product is copper(I) oxide
SO4H2 + 2Cu --> SO2 + 2CuOH
Copper and oxygen react to form copper (I) oxide, Cu2O, and copper (II) oxide, CuO. 4Cu + O2 --> 2Cu2O 2Cu + O2 --> 2CuO
2Cu(s)+S(s)→Cu2S(s)
2Cu(s) + O2(g) --> 2CuO(s)
It is the direct combination of two elements or oxidation of copper. 2Cu + O2 = 2CuO its a synthesis reaction!