Section 11.2 lecture for Honors & Prep Chemistry

1. Balance the following equations
Na3PO4 + KOH  NaOH + K3PO4
MgF2 + Li2CO3  MgCO3 + LiF
P4 + O2  P2O3
RbNO3 + BeF2  Be(NO3)2 + RbF

2. The heat and smoke of
burning charcoal are the
products of a combustion
reaction. Combustion is one
of the five general types of
chemical reactions. If you
can recognize a reaction as
being a particular type, you
may be able to predict the
products of the reaction.

3. The five general types of reaction are
combination, decomposition, single-
replacement, double-replacement, and
combustion.

4. In a combination reaction two or
more substances combine
to form ONE new
substance.

6. In a decomposition reaction a
single compound breaks down into
two or more simpler products.

8. In a single-replacement reaction
one element replaces a second
element in a compound.

9. The activity
series lists
metals in order
of decreasing
reactivity. It can
be used to predict if
a single-replacement
reaction will occur.

14. In a double-replacement reaction
positive ions are exchanged
between two compounds.

18. for Conceptual Problem 11.7

19. In a combustion reaction an
element or a compound reacts with
oxygen, often producing energy in
the form of heat and light.

20. The products of a combustion
reaction are usually CO2 and H2O

22. The elements and/or compounds
reacting are good indicators of the
reaction type which can help you
predict the reaction’s products.
2reactants1 product combination
1reactant  2 products decomposition
ionic + element  single replacement
Two ionic reactants  double replacement
__ + O2  CO2 + H2O combustion

28. 1. What type of reaction is described by
the following equation?
6Li + N2 → 2Li3N
a) combination reaction
b) decomposition reaction
c) single-replacement reaction
d) combustion reaction

29. 2. Balance the following equation and
indicate whether it represents a
combustion, combination, or
decomposition reaction.
H2SO4 → H2O2 + SO2
a. H2SO4 → H2O2 + SO2, combination
b. H2SO4 → H2O2 + SO2, decomposition
c. H2SO4 → 2H2O2 + SO2, combination
d. H SO → 2H O + SO , decomposition

30. 3. Predict the missing product in the
following unbalanced equation.
Pb(NO3)2 + KOH → KNO3 + ____________
a. PbOH2
b. Pb(OH)4
c. Pb(OH)2
d. PbOH