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5. 6. 7. 8. 9. 10. ? Na 2 SO 4 , K 2 O, HCl, P 2 O 5 H 2 CO 3 , Ca(OH) 2 , BaSO 4 H 2 S, FeO, KOH, H 2 SO 4 11. . 12. ! HCl, H 2 SO 4 , HF, H 2 NO 3 H 2 S, H 3 PO 4 , HBr, H 2 SiO 3 13. ! HCl, H 2 SO 4 , HF, H 2 NO 3 H 2 S, H 3 PO 4 , HBr, H 2 SiO 3 14. , 1,2,3 . 15. , . H 2 SiO 3 ,H 3 BO 3 , , - . , H 2 CrO 4 -, HnO 4 - . 16. HClH 2 SO 4 17. ! 2HCl + Zn = ZnCl 2+ H 2 H 2 SO 4+ FeO = FeSO 4+ H 2 O H 3 PO 4+ 3NaOH = Na 3 PO 4+3 H 2 O HCl + AgNO 3= AgCl + HNO 3 H 2 SiO 3= SiO 2+ H 2 O 18. X + Me = D + H 2 X + C.O = D + H 2 O X + C = D + H 2 O X + D = X + D X = X.O + H 2 O # 18 19. H 2 SO 4 ,HCl ! 20. H 2 SO 4+ Zn = ZnSO 4+ H 2 H 2 SO 4+ Na 2 O = Na 2 SO 4+ H 2 O H 2 SO 4+ Ca(OH) 2= CaSO 4+ 2H 2 O H 2 SO 4+ MgCl 2= MgSO 4+ 2HCl 21. 1 N 2 O 5 + H 2 O = 2HNO 3 2 AgNO 3 + HCl = AgCl + HNO 3 NaCl + H 2 SO 4 =2HCl + Na 2 SO 4 # 18 22. H 3 PO 4 , H 2 S ! 23. P 2 O 5+ 3H 2 O = 2 H 3 PO 4 Ba 3 (PO 4 ) 2+ 6HCl =2H 3 PO 4+ 3BaCl 2 MgS + 2HCl = MgCl 2+H 2 S 24. H 2 SiO 3 ,HF,H 2 SO 3 , ! # 12 # 15 25. .