Name: __________________________________________
Predict the Products
Date: _________________
Write the formulas for the reactants, predict the products, and balance the resulting equation.
Easier:
1. magnesium + oxygen 
Synthesis/Combustion
2 Mg + O2  2MgO
2.
aluminum + hydrochloric acid 
Single Replacement
2 Al + 6 HCl  2 AlCl3 + 3 H2
3.
zinc chloride + ammonium sulfide 
Double Replacement
ZnCl2 + (NH4)2S  ZnS + 2 NH4Cl
4.
mercury II sulfate + ammonium nitrate  Double Replacement**
HgSO4 + 2 NH4NO3  Hg(NO3)2 + (NH4)2SO4
5.
iron + copper II sulfate 
Single Replacement
Fe + CuSO4  FeSO4 + Cu
6.
zinc + sulfuric acid 
Single Replacement
Zn + H2SO4  ZnSO4 + H2
7.
chlorine + magnesium iodide 
Single Replacement
Cl2 + MgI2  MgCl2 + I2
8.
potassium + water 
Single Replacement
2 K + 2 H2O  2 KOH + H2
9.
iron + hydrochloric acid 
Single Replacement
Fe + 2 HCl  FeCl2 + H2
10. cobalt III hydroxide + nitric acid 
Double Replacement
Co(OH)3 + 3 HNO3  Co(NO3)3 + 3 H2O
11. bromine + sodium iodide 
Single Replacement
Br2 + 2 NaI  2 NaBr + I2
12. sodium hydroxide + phosphoric acid 
Double Replacement
3 NaOH + H3PO4  Na3PO4 + 3 H2O
13. ammonium sulfate + calcium hydroxide Double Replacement**
(NH4)2SO4 + Ca(OH)2  CaSO4 + 2 NH4OH
14. silver nitrate + potassium chloride 
AgNO3 + KCl  AgCl (s) + KNO3
Double Replacement
15. magnesium hydroxide + phosphoric acid 
Double Replacement
3 Mg(OH)2 + 2 H3PO4  Mg3(PO4)2 + 6 H2O
16. iron II sulfide + hydrochloric acid 
Double Replacement
FeS + 2 HCl  FeCl2 + H2S (g)
17. ammonium sulfide + iron II nitrate 
Double Replacement
(NH4)2S + Fe(NO3)2  2 NH4NO3 + FeS (s)
18. sulfuric acid + potassium hydroxide 
Double Replacement
H2SO4 + 2 KOH  K2SO4 + 2 H2O
19. aluminum sulfate + calcium phosphate 
Double Replacement
Al2(SO4)3 + Ca3(PO4)2  2 AlPO4 (s) + 3 CaSO4
20. barium carbonate + hydrochloric acid 
Double Replacement/Decomposition BaCO3 + 2 HCl  BaCl2 + H2CO3 ( CO2 + H2O)
21. silver acetate + potassium chromate 
Double Replacement
22. ammonium phosphate + barium hydroxide 
Double Replacement
2 AgC2H3O2 + K2CrO4  Ag2CrO4 (s) + 2 KC2H3O2
2 (NH4)3PO4 + 3 Ba(OH)2  6 NH4OH + Ba3(PO4)2 (s)
23. chromium III sulfite + sulfuric acid 
Double Replacement/Decomposition
Cr2(SO3)3 + H2SO4  Cr2(SO4)3 + H2SO3 ( SO2 + H2O)
24. calcium hydroxide + nitric acid 
Double Replacement
Ca(OH)2 + 2 HNO3  Ca(NO3)2 + 2 H2O
Decomposition
Ca(OH)2  CaO + H2O
Harder:
1. calcium hydroxide 
2.
phosphoric acid 
Decomposition
2 H3PO4  P2O5 + 3 H2O
3.
calcium carbonate 
Decomposition
CaCO3  CaO + CO2
4.
nitrous acid 
Decomposition
2 HNO2  N2O3 + H2O
5.
sodium chlorate 
Decomposition
2 NaClO3  2 NaCl + 3 O2
6.
dinitrogen pentoxide + water 
Synthesis
N2O5 + H2O  2 HNO3
**No reaction according to solubility rules.