+FeCl3:
2NaCl+2H2O(đpmn)----->2NaOH+H2+Cl2
H2+Cl2(t*)----->2HCl
4FeS2+11O2(t*)=>2Fe2O3+8SO2
Fe2O3+6HCl=>2FeCl3+3H2O
+Fe(OH)3:
2NaCl+2H2O(đpmn)---->2NaOH+H2+Cl2
H2+Cl2(t*)--->2HCl
4FeS2+11O2(to)--->2Fe2O3+8SO2
Fe2O3+6HCl--->2FeCl3+3H2O
FeCl3+3NaOH---->Fe(OH)3+3NaCl
+Na2SO3:
4FeS2+11O2(to)------>2Fe2O3+8SO2
2NaCl+2H2O(đpmn)---->2NaOH+H2+Cl2
SO2+2NaOH---->Na2SO3+H2O