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Net Ionic Equations. Double Replacement Redox / Single Replacement Composition/Decomposition Complex Ions Combustion. Identification of Double Replacement Reaction. Acid / Base NH 3 + HF NH 4 + + F – Precipitation Ba 2+ + SO 4 2- BaSO 4 Both
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Net Ionic Equations Double Replacement Redox / Single Replacement Composition/Decomposition Complex Ions Combustion
Identification of Double Replacement Reaction • Acid / Base NH3 + HF NH4+ + F – • Precipitation Ba2+ + SO42- BaSO4 • Both 2 H+ + SO42- + Ca(OH)2 CaSO4 + 2 HOH
Redox and Single Replacement Redox • Use of key terms MnO4- H2O2 Cr2O72- HNO3 • Metals with multiple oxidation states Sn2+ Sn4+ Cr2+ Cr3+ Cr6+ • Acidic and Basic conditions 4 MnO4- + 12 H+ + 20 H2O2 4 Mn2+ + 15 O2 + 26 H2O
Redox / Single Replacement Single Replacement • Like will replace like 2 Na + 2 H2O 2 Na+ + 2 OH- + H2 Cl2 + 2 KI 2 K+ + 2 Cl- + I2
Combustion • Reaction of a hydrocarbon/alcohol or other organic molecule with oxygen gas to produce carbon dioxide and water C3H8 + 5 O2→ 3 CO2 + 4 H2O CH3CH2OH + 3 O2 → 2 CO2 + 3 H2O
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
Decomposition / Composition • Composition has two reactants that combine into one product S8 + 8 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
Complex Ions • Particles that generally combine with ammonia and hydroxides to form complex ions with a charge AgCl + 2 NH3 Ag(NH3)2+ + Cl- Cu2+ + 4 NH3 Cu(NH3)42+ Al3+ + 4 OH- Al(OH)4- having the correct ligand number is not required but being consistent with number and charge is important
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