BÀI TẬP VỀ NHÓM OXI – LƯU HUỲNH 1. 2 2 o t S H H S + → 2. 2 2 o t S O SO+ → 3. 2 2 2 2 2 3SO H S H O S + → + ↓ 4. 2 2 2 2 4 2SO Br H O H SO HBr + + → + 5. Fe S FeS + → 6. 2 4 4 2 FeS H SO FeSO H S + → + Hoặc 2 2 2FeS HBr H S FeBr + → + 7. 2 2 2 2 3 4 11 8 2FeS O SO Fe O + → + 8. 2 5 2 2 3 400 2 2 o V O C SO O SO + ˆ ˆ ˆ ˆ† ‡ ˆ ˆ ˆ ˆ 9. 2 2 2 2 4 2 2SO Cl H O HCl H SO + + → + 10. 3 2 2 4 SO H O H SO + → 11. 2 4 2 2 2 3 2 dd H SO S SO H O + → ↑ + Hoặc 2 4 2 2 2 2H SO H S SO H O S + → ↑ + + ↓ Hoặc 2 4 4 2 2 2 2 dd H SO Cu CuSO SO H O+ → + ↑ + Hoặc 2 4 2 2 2 2 2 2 o t dd H SO C CO SO H O+ → + ↑ + Hoaëc 2 4 3 4 2 2 5 2 2 5 2 o t dd H SO P H PO SO H O+ → + ↑ + 12. 2 2 3 2 2SO NaOH Na SO H O + → + 13. 2 3 4 2 2 2 4 3 2 2 3 2Na SO KMnO H O MnO Na SO KOH + + → + + Hoaëc 2 3 2 4 2 4 2 2 Na SO H SO Na SO H O SO + → + + ↑ Hoaëc 2 3 2 2 4 4 3 o t Na SO Na S Na SO→ + 14. 2 4 2 4 2Na SO BaCl NaCl BaSO + → + ↓ 15. 3 3 NaCl AgNO NaNO AgCl + → + ↓ 16. 2 2 2FeS HCl H S FeCl + → ↑ + 17. 2 2 2 2 4 4 4 8H S Cl H O H SO HCl + + → + 18. 2 2 2 2 4 2HCl MnO MnCl Cl H O + → + ↑ + Hoaëc 4 2 2 2 16 2 2 5 2 8HCl KMnO MnCl Cl KCl H O + → + + + Hoaëc 2 2 7 2 3 2 14 3 2 2 7HCl K Cr O Cl CrCl KCl H O+ → + + + 19. 2 3 2 3 6 5 3 o t dd Cl KOH KCl KClO H O + → + + 20. 2 3 2 2 2 3 o MnO t KClO KCl O → + ↑ 21. 2 2 2FeS HCl FeCl H S + → + ↑ 22. 2 2 2H S Cl S HCl + → ↓ + Hoaëc 2 4 2 2 2 2H SO H S SO H O S + → + + ↓ 23. 2 2 2 2 4 4 4 8H S Cl H O H SO HCl + + → + 24. 2 2 4 2 2 2H S H SO SO H O S + → + + ↓ Hoaëc 2 2 2 2 2 3 2 2H S O SO H O + → + 25. 3 2 4 2 2 6 6 2 dd S HNO H SO NO H O + → + ↑ + 26. 2 2 3 3 2NO H O HNO NO + → + Hoaëc 2 2 2 3 4 2 4NO H O O HNO+ + → 27. 2 4 4 2 2 2 2 o t dd H SO Cu CuSO SO H O+ → + ↑ + Hoaëc 2 4 2 4 H SO CuO H O CuSO + → + Hoaëc 2 4 2 4 2 ( ) 2H SO Cu OH CuSO H O + → + 28. 4 3 2 4 3 2 ( ) ( )CuSO Ba NO BaSO Cu NO + → ↓ + 29. 3 2 2 2 1 ( ) 2 2 o t Cu NO CuO NO O→ + ↑ + ↑ 30. 2 2 2 2 4 2 2SO Br H O H SO HBr + + → +