6Cu + O2 -> 2CuO
2CuO + 4HCl -> 2CuCl2 + 2H2O
CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl
Cu(OH)2 -> CuO + H2O
CuO + H2 -> Cu + H2O
6Cu + O2 -> 2CuO
2CuO + 4HCl -> 2CuCl2 + 2H2O
CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl
Cu(OH)2 -> CuO + H2O
CuO + H2 -> Cu + H2O