SULFUROS:
PbS + 2O2 → SO4 + Pb
2ZnS + 3O2 → 2ZnO + 2SO2
BICARBONATOS:
K2CO3 (S) + CO2 (g) + H2O (l) →2 KHCO3 (s)
CaCO3 + CO2 + H2O →Ca(HCO3)2
Ca(HCO3)2 → CaO + 2CO + H2
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SULFUROS:
PbS + 2O2 → SO4 + Pb
2ZnS + 3O2 → 2ZnO + 2SO2
2As + FeS + 5O2→ As2O3 + Fe2O3 + 2SO2BICARBONATOS:
K2CO3 (S) + CO2 (g) + H2O (l) →2 KHCO3 (s)
NH4HCO3 →NH3 + H2O + CO2CaCO3 + CO2 + H2O →Ca(HCO3)2
Ca(HCO3)2 → CaO + 2CO + H2