Zn(OH)2+H2SO4=ZnSO4+2H2O
H2SO4+2NaOH=Na2SO4+2H2O
H2SO4+Li2O=Li2SO4+H2O
H2SO4+CaCO3=CaSO4+H2O+CO2
2NaOH+SO2=Na2SO3+H2O
Li2O+SO2=Li2SO3
CaCO3+SO2=CaSO3=CO2
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Zn(OH)2+H2SO4=ZnSO4+2H2O
H2SO4+2NaOH=Na2SO4+2H2O
H2SO4+Li2O=Li2SO4+H2O
H2SO4+CaCO3=CaSO4+H2O+CO2
2NaOH+SO2=Na2SO3+H2O
Li2O+SO2=Li2SO3
CaCO3+SO2=CaSO3=CO2