Download Predicting Products of Chemical Reactions.

Predicting Products of Chemical
Reactions.

Identify the type of reaction.

Two elements:
Synthesis

One compound:
Decomposition

One compound,
One element:
Synthesis or Single replacement

Two compounds
Synthesis or Double replacement

Hydrocarbon + O2
Combustion
Combustion reaction
The
product is
always!!!!!!!!! CO2 +
H2 O
Double Replacement


Switch the positive ions:
Check Oxidation numbers:
Examples:
HOH + KCl  HCl + KOH
Al2(SO4)3 + NH4ClO3  (NH4)2SO4 + Al(ClO3)2
Practice these:
3.
BaCl2 + K2O
MgF2 + Li2O
KI + Pb(NO3)2
4.
FeS + HCl
1.
2.
Single Replacement
Determine if the single element is
positive or negative.
 Replace the same charged element in
the compound.
Examples:

Al + Pb(NO3)2  Al(NO3)3 + Pb
Mg + HCl  MgCl2 + H2
Practice these:
3.
BaCl2 + K
MgF2 + O2
K + Pb(NO3)2
4.
FeS + Cl2
1.
2.
Synthesis

If there are only two elements:


Combine them into a binary compound.
Check oxidation number
Examples:
Rb + S  Rb2S
Ba + S  BaS
Practice these:
3.
H2 + O2
Mg + Cl2
K+N
4.
Ca + S
1.
2.
Synthesis

If there are three or more elements:


THERE WILL BE AT LEAST ONE POLYATOMIC ION.
ARRANGE THE ELEMENTS INTO A COMMON
POLYATOMOC ION. THE OTHER ION IS THE
ELEMENT LEFT OVER.
Examples:
H2O + SO2  H2SO4
Ca + SO2 + O2  CaSO4
Practice these:
1.
2.
3.
4.
NH3 +H2O 
H2SO3 + O2
CaO + SO2 
MgO + PO3 
Decomposition:
Products depends on the compound
decomposing:
 Binary compounds simply break into
individual elements:
Examples:
H2O  H2 + O2
MgCl2  Mg + Cl2

Practice these:
1.
2.
3.
4.
NH3
SO2
CaO
MgO
Hydroxides:

Metal hydroxide + H2O
Examples:
NaOH  Na2O + H2O
Ca(OH)2  CaO + H2O
Practice these:
1.
2.
3.
4.
Al(OH)3 
LiOH
Fe(OH)3
CuOH
Carbonates:

Metal oxide + CO2
Examples:
CaCO3  CaO + CO2
PbCO3  PbO + CO2
Practice these:
1.
2.
3.
4.
Li2CO3
SrCO3
Cu2CO3
MgCO3
Chlorates

Metal Chloride + O2
Examples:
Ba(ClO3)2  BaCl2 + O2
NaClO3  NaCl + O2
Fe(ClO3)3  FeCl3 + O2
Practice these:
1.
2.
3.
4.
LiClO3
Sr(ClO3)2
CuClO3
Mg(ClO3)2