Balance the following equations

Na3PO4 + KOH NaOH + K3PO4

MgF2 + Li2CO3 MgCO3 + LiF

P4 + O2 P2O3

RbNO3 + BeF2 Be(NO3)2 + RbF

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.

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

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

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

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

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

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

for Conceptual Problem 11.7

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

The products of a combustion reaction are usually CO2 and H2O

The elements and/or compounds reacting are good indicators of the reaction type which can help you predict the reaction’s products.

2reactants1 product combination

1reactant 2 products decomposition

ionic + element single replacement

Two ionic reactants double replacement

__ + O2 CO2 + H2O combustion

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

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. H2SO4 2H2O2 + SO2, decomposition

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