Name:
Practice Problems on Net Ionic Equations:
For each reaction, please show the complete ionic and net ionic forms of the
following equations. Also, list the spectator ions; if all are spectators, please
indicate that no reaction takes place.
* A set of solubility rules are given at the end of this document.
1. AgNO3 (aq) + KCl (aq)

AgCl (s) + KNO3 (aq)
Complete ionic:
Spectators:
Net ionic:
2. Mg(NO3)2 (aq)
+ Na2CO3 (aq)  MgCO3 (s) +
NaNO3 (aq)
Complete ionic:
Spectators:
Net ionic:
3. Ca(OH)2 (aq) +
FeCl3 (aq) 
CaCl2 (aq) +
Fe(OH)3 (s)
Complete ionic:
Spectators:
Net ionic:
4. cobalt(III) bromide + potassium sulfidecobalt (III) sulfide + potassium bromide
Complete ionic:
Spectators:
Net ionic:
5. K3PO4 (aq) + Al(NO3)3 (aq) 
Complete ionic:
Spectators:
Net ionic:
6. BeI2 (aq) + Cu2SO4 (aq) 
Complete ionic:
Spectators:
Net ionic:
7. Ni(NO3)3 (aq)
+ KBr (aq) 
Complete ionic:
Spectators:
Net ionic:
8. chromium(III) nitrate (aq) + iron(II) sulfate (aq) 
Complete ionic:
Spectators:
Net ionic:
9. barium nitrate +
Complete ionic:
ammonium phosphate

Spectators:
Net ionic:
10. manganese(II) chloride (aq) +
ammonium carbonate (aq) 
Complete ionic:
Spectators:
Net ionic:
Solubility Rules
1. All Group I ions, and ammonium are soluble.
2. All nitrates, chlorates and acetates are soluble.
3. All halides (group 17) are soluble except with silver (I), copper (II), lead (II),
and mercury (I), and iron (III).
4. Sulfates are soluble except with barium, lead(II), strontium, silver, and calcium.
5. All carbonate, phosphate and sulfite are insoluble, except with group IA and
ammonium.
6. All oxides and hydroxides are insoluble except with group IA, calcium,
strontium and barium.
7. Sulfides are insoluble except with Group IA and IIA elements and ammonium.