Transcript Net Ionic Equations - Santa Susana High School

Net Ionic Equations
• The net ionic equation represents reactions
that take place in an aqueous environment.
AgNO3(aq) + NaCl(aq) g AgCl(aq) + NaNO3(aq)
– Since all substances are ionic compounds they are
not present in the form listed but exist as ions in
solution.
Complete Ionic Equation
• Ag+(aq) + NO3- (aq)+ Na+ (aq) + Cl- (aq) g AgCl(s) + Na+ (aq) + NO3- (aq)
• The complete ionic equation lists all of the ions that
are available to participate in the reaction.
• Spectator ions are those ions that are present in the
reactants but are unchanged in the products
• Ag+(aq) + NO3- (aq)+ Na+ (aq) + Cl- (aq) g AgCl(s) + Na+ (aq) + NO3- (aq)
Net Ionic Equations
• The net ionic equation lists ONLY the reactants
and products that were part of the product.
• Ag+(aq) + NO3- (aq)+ Na+ (aq) + Cl- (aq) g AgCl(s) + Na+ (aq) + NO3- (aq)
• Ag+(aq) + Cl- (aq) g AgCl(s)
Predicting the Formation of a Precipitate
• Writing a net ionic equation can often be
accomplished by predicting the formation of a
precipitate using the solubility rules
Pb(NO3) (aq) + H2SO4 (aq) g ______ + ______
• Write the net ionic equation
Pb2+ (aq) + 2NO3- (aq) + 2H+ (aq) + SO42- (aq) g
• Cancel the spectator ions
• Write the Net equation
Pb2+ (aq) + SO42- (aq) g Pb SO4 (s)
Pb SO4 (s) + 2NO3- (aq) + 2H+ (aq)