1. REDOX sodium metal is added to water. Na + 2H2O  Na+ + 2OH- + H2
Is the resulting solution acidic, basic or neutral? EXPLAIN and give an example of how you could prove your response.
The resulting solution would be basic. This could be observed through the addition of phenolphthalein indicator which would turn pink in base.

2. REDOX
a piece of lithium metal is dropped into a container of nitrogen gas.
6Li + N2  2Li3N
Besides a redox reaction, how else might this reaction be classified.
Synthesis Reaction: a more complex product made from simple reactants

3. Lewis Acids and Bases
the gases boron trifluoride and ammonia are mixed.
BF3 + NH3  BF3NH3
Based on behavior, what type of species is boron trifluoride in this reaction? EXPLAIN.
BF3 is behaving as a Lewis acid as it is accepting the electron pair provided by nitrogen in a coordinate covalent bond.

4. Metal oxides + water solid sodium oxide is added to water.
Na2O + H2O  2 Na OH-
Is the resulting solution acidic, basic or neutral? EXPLAIN
Basic. Metal oxides form basic compounds in water.

5. Combustion
1-Propene ignites in air
2 C3H O2  6 CO H2O

6. Complex Ion Formation
excess concentrated sodium hydroxide solution is added to solid aluminum hydroxide to form a complex ion.
Al(OH)3 + 3 OH-  Al(OH)63- [or Al(OH)4-]
Name the complex formed in this reaction.
hexahydroxoaluminate or tetrahydroxoaluminate

7. Decomposition A small amount of KI is added to hydrogen peroxide
2H2O2  2H2O + O2
What would be observed as this reaction proceeded
A great amount of heat and water vapor (steam) is released (exothermic). The KI is not consumed in the reaction as it serves as the catalyst.

8. REDOX Chlorine gas reacts with sodium bromide solution
Cl2 (g) + 2 Br - (aq)  Br2 + 2 Cl -(aq)
Which species is the oxidizing agent
Chlorine is the oxidizing agent
What would you see as the reaction proceeds?
The solution would turn brown from the presence of bromine.

9. Gas producing acid-base Rxn
Excess Hydrochloric acid is added to solid calcium carbonate.
CaCO3(s) + 2HCl(aq)  CaCl2(aq) + H2O(l) + CO2(g)
CaCO3(s) + 2H+  Ca2+ + H2O(l) + CO2(g)
Indicate one thing that would be observed as the reaction occurs.
The solid dissolves OR a gas is given off

10. Acid-Base Reaction
A solution of hydrochloric acid is added to a solution of sodium hydroxide until the same number of moles of each compound has been added.
HCl(aq) + NaOH(aq)  NaCl(aq)+ H2O(l)
H+ + OH-  H2O
What is the approximate pH of the solution? 7

11. Acid-Base Reaction
A solution of hydrofluoric acid is added to a solution of sodium hydroxide until the same number of moles of each compound has been added.
NaOH(aq) + HF  NaF(aq) + H2O(l)
OH- (aq) + HF  F- (aq) + H2O(l)
What is the conjugate base of HF? F-

12. Single Replacement
Chlorine gas is bubbled into a solution of potassium Bromide.
Cl2(g) + 2KBr(aq)  2KCl(aq) + Br2(l)
Cl2 + 2Br-  2Cl- + Br2
What is the reducing agent? Explain.