1. Predicting precipitation reactions

2. Ionic reactions of two solutions are double replacement reactions
The ions switch partners in a double replacement reaction.
Ba(ClO3)2 + Ag2SO4  BaSO4 + AgClO3
barium chlorate + silver I sulfate
barium sulfate + silver I chlorate
(we are not balancing yet)

3. Example Calcium Nitrate and Potassium Phosphate Ca(NO3)2 + K3PO4  ?
It helps to say the names of the ionic compounds
Switch partners
Calcium Phosphate and Potassium Nitrate
Ca3(PO4) KNO3
What are these ions
Ca(NO3)2 + K3PO4  Ca3(PO4) KNO3

4. Full Molecular Equation and Net Ionic Equation
Ca(NO3)2 + K3PO4  Ca3(PO4) KNO3
This is the full molecular equation.
Write the net ionic equation for this reaction
First determine what is soluble and what is insoluble
3 Ca PO43-  Ca3(PO4)2

5. DO NOT!!!!!
It helps to say the name of the compound because you have to write the appropriate ionic formula.
A common mistake is to try and carry the subscript over from the reactant side
Ca(NO3)2 + K3PO4
 Ca PO K3(NO3)2
The charges don’t cancel out!!!!!

6. Predict the full molecular and net ionic equation between
Copper II acetate and lithium sulfite
Ammonium oxalate and cobalt II chloride
Aluminum nitrate and sodium carbonate
Hydrochloric acid and silver I nitrate