EJERCICIOS BALANCEO DE ECUACIONES 1. Fe +2 + Cr 2 O 7 -2 → Fe +3 + Cr +3 Medio ácido 2. Al + Cu(NO 3 ) 2 → Al(NO 3 ) 3 + Cu 3. Br 2 + KOH → KBr + KBrO 3 + H 2 O 4. Bi 2 O 3 + NaOH + NaClO → NaBiO 3 + NaCl + H 2 O 5. I 2 + HNO 3 → HIO 3 + NO 2 + H 2 O 6. KNO 3 + C → CO 2 + NO 2 + K 2 O 7. Ca 3 (PO 4 ) 2 + SiO 2 + C → CaSiO 3 + P 4 + CO 8. NaCrO 2 + NaClO + H 2 O → Na 2 CrO 4 + NaOH + Cl 2 9. I -1 + MnO 4 -1 → I 2 + MnO 2 Medio básico 10. H 2 SO 4 + KI → H 2 S + H 2 O + I 2 + K 2 SO 4 11. Ag + H 2 SO 4 → Ag 2 SO 4 + SO 2 + H 2 O 12. HNO 2 → HNO 3 + NO + H 2 O 13. H 2 O + SO 2 + HNO 3 → H 2 SO 4 + NH 3 14. Al + Cu S O 4 → Cu + Al 2 (SO 4 ) 3 15. K Cl O 3 + H 2 SO 4 → KHSO 4 + O 2 + Cl O 2 + H 2 O 16. C + HNO 3 → NO 2 + CO 2 + H 2 O 17. Br 2 + H 3 As O 4 → As 4 + H Br O 2 + H 2 O 18. C 5 H 10 + H 3 PO 4 → CO 2 + P 2 O 3 + H 2 O 19. KMnO 4 + FeSO 4 + H 2 SO 4 → K 2 SO 4 + MnSO 4 + Fe 2 (SO 4 ) 3 + H 2 O 20. H 2 S + Na 2 Cr 2 O 7 + H 2 SO 4 → Cr 2 (SO 4 ) 3 + H 2 O + S + NaHSO 4 21. Zn + HNO 3 → Zn (NO 3 ) 2 + H 2 O + NH 4 NO 3 22. As 2 O 3 + HNO 3 → H 2 As O 4 + NO 2 + H 2 O 23. Ca 3 (PO) 2 + Si O 2 + C → Ca Si O 3 + P 4 + CO 24. K 2 Cr 2 O 7 + HCl → Cr Cl 3 + K Cl + H 2 O + Cl 2 25. Cr 2 O 3 + Na 2 CO 3 + KNO 3 → Na 2 CrO 4 + CO 2 + KNO 2 26. Cr2O7 -2 + C2H6O → Cr 3+ + C2H4O2 + H2O