Odpowiedź :
1. FeS+2HCl--->FeCl2+H2S
2. 2H2S+3O2--->2SO2+2H2O
3. 2SO2+O2--->2SO3
4. H2O+SO3--->H2SO4
5. H2SO4+Na2O--->Na2SO4+H2O
6. Na2SO4--->Na2O+SO3
1. FeS+2HCl--->FeCl2+H2S
2. 2H2S+3O2--->2SO2+2H2O
3. 2SO2+O2--->2SO3
4. H2O+SO3--->H2SO4
5. H2SO4+Na2O--->Na2SO4+H2O
6. Na2SO4--->Na2O+SO3