* Cu + H2SO4 -> CuSO4 + H2O +SO2
* NaCl + H2O -> NaOH + Cl2 + H2
2 Fe + 3Cl2 -> 2FeCl3
* 2FeCl3 -> Cl2 + 2FeCl2
2NaCl--------->2Na+Cl2
Fe+Cl2--->FeCl2
2FeCl2+Cl2---->2FeCl3
Cu+H2SO4đ------------>CuSO4+SO2+H2O
-Điều chế FeCl2: 2NaCl + 2H2O\(\xrightarrow[mn]{đp}\) 2NaOH+H2\(\uparrow\)+Cl2\(\uparrow\)
H2+Cl2 \(\underrightarrow{t^o}\) 2HCl
Fe+2HCl\(\rightarrow\)FeCl2+H2
-Điều chế FeCl3:+ 2NaCl\(\xrightarrow[nc]{đp}\)2Na+Cl2
2Fe+3Cl2\(\underrightarrow{t^o}\)2FeCl3
+ 2NaCl + 2H2O\(\xrightarrow[mn]{đp}\) 2NaOH+H2\(\uparrow\)+Cl2\(\uparrow\)
H2+Cl2 \(\underrightarrow{t^o}\) 2HCl
MnO2+4HCl\(\rightarrow\)MnCl2+Cl2\(\uparrow\)+2H2O
2Fe+3Cl2\(\rightarrow\)2FeCl3
-Điều chế CuSO4: Cu+2H2SO4(đ)\(\underrightarrow{t^o}\)CuSO4+2H2O+SO2
