1. BALANCING EQUATIONS

2. ____ BaS + ____ PtF 2  ____ BaF 2 + ____ PtS All balanced!!

3. ____ HCN + ____ CuSO 4  ____ H 2 SO 4 + ____ Cu(CN) 2 2 HCN + CuSO 4  H 2 SO 4 + Cu(CN) 2

4. ____ P 4 + ____ O 2  ____ P 2 O 3 P 4 + 3 O 2  2 P 2 O 3

5. ____ Na 3 PO 4 + ____ KOH  ____ NaOH + ____ K 3 PO 4 Na 3 PO 4 + 3 KOH  3 NaOH + K 3 PO 4

6. ____ AlBr 3 + ____ K 2 SO 4  ____ KBr + ____ Al 2 (SO 4 ) 3 2 AlBr 3 + 3 K 2 SO 4  6 KBr + 1 Al 2 (SO 4 ) 3

7. Aluminum chloride and bromine gas are formed when aluminum bromide and chlorine gas react. 2 AlBr 3 + 3 Cl 2  2 AlCl 3 + 3 Br 2

8. Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide. Cu + 2 H 2 SO 4  CuSO 4 + 2 H 2 O + SO 2

9. Potassium metal and chlorine gas combine to form potassium chloride. 2 K + Cl 2  2 KCl

10. phosphorus + oxygen  diphosphorous pentoxide 4P +5O 2  2P 2 O 5

11. zinc chloride + phosphoric acid  zinc phosphate + hydrogen chloride 3 ZnCl 2 + 2 H 3 PO 4  Zn 3 (PO 4 ) 2 + 6 HCl