FeS + 2O2 → FeSO4
Iron(II) sulfide react with oxygen to produce iron(II) sulfate. Iron sulfide is wet. This reaction takes place slowly. Impurities: sulfur S, iron(III) polyhydrate oxide Fe2O3 • nH2O.
Interaction iron(II) sulfide with atmospheric oxygen.
Interaction iron(II) sulfide with atmospheric oxygen.