1. Reactions

2. For the following equations, give the type of reaction and predict the products
2K(s) + Br2(l) 
Synthesis #1
KBr

3. AgNO3(aq) + NaCl(aq) ®
Double replacement #1
AgCl(s) + NaNO3(aq)

4. HCl(aq) + KOH(aq) ®
Double replacement #3
H2O(l) + KCl(aq)

5. 2Ag2O(s) ®
Decomposition #1
4Ag(s) + O2(g)

6. CH4(l) + 2O2(g) ®
Combustion
CO2(g) + 2H2O(g)

7. Zn + 2HCl ®
Single Replacement #3
ZnCl2 + H2

8. NaBr + I2
Single Replacement #4
No Reaction

9. H2SO4 + BaCl2 ®
Double Replacement #1
BaSO4  + 2HCl

10. Solutions of sodium carbonate and hydrochloric acid are mixed.
Double Replacement #2
Sodium chloride, water and carbon dioxide
Write a balanced equation with all phase symbols.
Na2CO3 (aq) + 2HCl (aq)  2NaCl (aq) + H2O (l) + CO2

11. Propanol (C3H7OH) is burned.
Combustion
CO2+ H2O
Balance the equation.
2 C3H7OH + 9O2  6CO2+ 8H2O

12. Lithium + Oxygen 
Synthesis #1
Li2O

13. Calcium chlorate 
Decomposition #5
CaCl2 + O2

14. Ca + H2O 
Single replacement #2
Ca(OH)2 + H2

15. Sulfur dioxide + water Synthesis #4 Sulfurous acid
Write a balanced equation
SO2 + H2O  H2SO3

16. Aqueous solutions of sodium sulfide and copper(II) chloride are mixed together.
Type of reaction?
Double replacement #1
If a precipitate forms, what is its formula?
CuS

17. Aqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct?
Both KNO3 and NH4SO4 precipitate from solution.
A gas is released.
NH4SO4 will precipitate from solution.
KNO3 will precipitate from solution.
No reaction will occur.
Answer: E

18. Which of the following compounds is soluble in water?
Ni(OH)2
K3PO4
BaSO4
CoCO3
PbCl2
Answer: B