Witaj :)
[tex]1.\ 2Cu+O_2\rightarrow 2CuO\\\\2.\ CuO+H_2SO_4\rightarrow CuSO_4+H_2O\\\\3.\ CuSO_4+2KOH\rightarrow Cu(OH)_2\downarrow K_2SO_4\\\\4.\ Cu(OH)_2\downarrow+2HCl\rightarrow CuCl_2+2H_2O\\\\5.\ CuO+H_2\rightarrow Cu+H_2O\\\\6. CuO+2HCl\rightarrow CuCl_2+H_2O[/tex]
