銅及其重要化合物之間的轉化關係如圖:

①2Cu+O2==2CuO (加熱)

②2Cu+S==Cu2S (加熱)

④Cu+4HNO3(濃)==Cu(NO3)2+2NO2↑+2H2O

⑤Cu+2H2SO4(濃)=CuSO4+SO2↑+2H2O

⑥Cu+2FeCl3===CuCl2+2FeCl2

⑦2Cu+O2+CO2+H2O==Cu2(OH)2CO3

⑨CuO+2HNO3=Cu(NO3)2+H2O

⑩CuO+2HCl====CuCl2+H2O

(11)Cu(OH)2+2HCl==CuCl2+2H2O

(12)Cu(OH)2+2HNO3==Cu(NO3)2+2H2O

(13)Cu(OH)2==CuO+H2O (加熱)

(15)Cu(NO3)2+2NaOH==Cu(OH)2↓+2NaNO3

(16)CuCl2+2NaOH==Cu(OH)2↓+2NaCl

(17)Cu(NO3)2+Fe==Fe(NO3)2+Cu

(18)CuCl2+Zn===ZnCl2+Cu

(19)CuCl2+H2S===CuS↓+2HCl

(20)CuCl2+Na2S===CuS↓+2NaCl