Download Net Ionic Equations

Net Ionic Equations
The formation of an insoluble
solid (a precipitate) drives a
chemical reaction.
Chemists use 3 types of equations
to represent aqueous ionic
reactions.
Molecular, Complete Ionic, and
Net Ionic Equations
a) Molecular Equations-complete
formulas are written for all the
reactants and products, no ions are
written. (Just a normal equation)
b)Complete Ionic equations-all
soluble ionic substances are written
in their dissociated (ionized) forms.
c) Net
Ionic equations-only those
particles which are involved in a
chemical reaction. All spectator
ions are removed
Spectator ions-those ions which do
not participate in the chemical
reaction but are present in the
reaction mixture.
Write the molecular,
complete ionic, and net ionic
equations for the reaction of
an aqueous solution of
calcium chloride and an
aqueous solution of sodium
carbonate.
1) the molecular equation is:
CaCl2(aq) + Na2CO3(aq) CaCO3(s)+2NaCl(aq)
2) the complete ionic equation is:
Ca2+(aq) + 2 Cl-(aq) + 2 Na+(aq) + CO32-(aq) 
CaCO3(s) + 2 Na+(aq) + 2 Cl-(aq)
3) the net ionic equation is:
Ca2+(aq) + CO32- (aq)  CaCO3(s)
 Predict the products when solutions of
silver nitrate and sodium chromate are
mixed.
PREDICTING PRECIPITATION
REACTIONS USING SOLUBILITY
RULES
You need to know whether the
predicted products are soluble or
insoluble in water.
Pg. 344 -Rules
Example:
If we add a solution of
potassium chloride to a silver
nitrate solution will a
precipitate form? Write the
molecular, complete ionic and
net ionic equations.
If we add a solution of sodium nitrate to
an ammonium chloride solution will a
precipitate form?