1) Zn+S=ZnS
2ZnS+2O2=2ZnO+SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
2) S+O2=SO2
2H2SO4+Cu=CuSO4+SO2+2H2
3) FeS+2HCl=FeCl2+H2S
H2S-> H2+S
S+O2=SO2
SO3+2KOH=K2SO4+H2O
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Verified answer
1) Zn+S=ZnS
2ZnS+2O2=2ZnO+SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
2) S+O2=SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
2H2SO4+Cu=CuSO4+SO2+2H2
3) FeS+2HCl=FeCl2+H2S
H2S-> H2+S
S+O2=SO2
2SO2+O2=2SO3
SO3+2KOH=K2SO4+H2O