1. Net Ionic Equations Double Replacement Redox / Single Replacement
Composition/Decomposition
Complex Ions
Combustion

2. Identification of Double Replacement Reaction
Acid / Base
NH3 + HF  NH4+ + F –
Precipitation
Ba2+ + SO42-  BaSO4
Both
2 H+ + SO Ca(OH)2  CaSO4 + 2 HOH

3. Redox and Single Replacement
Use of key terms
MnO4- H2O2 Cr2O72- HNO3
Elements with multiple oxidation states
Sn2+ Sn4+ Cr2+ Cr3+ Cr6+ I- IO- IO2-
O(-1 or -2)
Acidic and Basic conditions
4 MnO H H2O2  4 Mn O H2O

4. Redox / Single Replacement
Like will replace like
2 Na + 2 H2O  2 Na OH- + H2
Cl KI  2 K Cl- + I2

5. Combustion
Reaction of a hydrocarbon/alcohol or other organic molecule with oxygen gas to produce carbon dioxide and water
C3H O2 → 3 CO H2O
CH3CH2OH O2 → 2 CO H2O

6. Decomposition/Composition
Decomposition has only one reactant and it breaks up into elements and /or compounds
MgCO3  MgO + CO2
Ba(OH)2  BaO + H2O
2 Al2O3  4 Al + 3 O2

7. Decomposition / Composition
Composition has two reactants that combine into one product
S O2  8 SO2
nonmetal oxides plus water makes
acids
SO3 + H2O  2 H SO42-
metal oxides plus water makes bases
CaO + H2O  Ca(OH)2

8. Complex Ions
Particles that generally combine with excess ligand (often water, hydroxide or ammonia) to form complex ions with a charge
Cu NH3  [Cu(NH3)4]2+
Al OH-  [Al(OH)4]-
AgCl NH3  [Ag(NH3)2]+ + Cl-
Fe3+ + SCN-  [Fe(SCN)]2+
having the correct ligand number is not required but being consistent with number and charge is important

9. In Review Identify type of reaction from list of 5 types
Equations need to be balanced
Check for appropriate charges
Remember not to include spectator
ions
Remember practice questions about each of the 3 balanced net ionic equations