Matching

1. Chemical reduction of zinc oxides in the presence of reduced carbon 2. Formation of anorthite during mineral carbonation 3. Precipitation of calcite during mineral carbonation = 13 Caco, + 2H - Ca2+ + H2O + CO2 4. Oxidation of zinc sulfides under reduced conditions = 3Fe3+ + 3H20 - 3Fe (OH)3 + 3H 5. Chemical oxidation of iron di- sulfides under oxidizing conditions 6. Chemical oxidation of pyrite by oxygen under reducing conditions 2CuS+ 4H+ + O2(g) = 2Cu2+25 + 2H20 7. Acid rain formation Fes, (s) + 7/2 O2 + H2O = Fe2+ + 25042 + 2H 8. Dissolution of copper sulfides under alkaline conditions CaAl Si208 + CO2 + H2O = CaCO3 + Al Si20 (OH)4 9. Alkaline dissolution of calcite 10. Precipitation of ferric hydroxides 11. Partial weathering of mica and silica under acidic conditions ZnO (s) + C (s) = Zn (s) + CO 12. Precipitation of ferrous hydroxides CO2(g) + H20 (1) - H,Co, (aq) H,Co, (aq) = H+ (aq) + HCO3 (aq) 13. Formation of calcite under acidic conditions 14. Chemical reduction of zinc oxides in the presence of oxidized carbon compounds 15. The leaching of cupper under acidic conditions 16. Dissolution of Calcite under acidic conditions