2H2S+3O2=2SO2+2H2O
SO2+Na2O=Na2SO3
Na2SO3+2HCl=2NaCl+SO2+H2O
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+Na2O=Na2SO4+H2O
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Verified answer
2H2S+3O2=2SO2+2H2O
SO2+Na2O=Na2SO3
Na2SO3+2HCl=2NaCl+SO2+H2O
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+Na2O=Na2SO4+H2O