Net Ionic Reactions

Unit 8

1

Spectator Ions

2

AgNO3 (aq) + NaCl (aq) AgCl (s) + NaNO3 (aq)

Ag+ + NO3- Na+ + Cl- Na+ + NO3

-AgCl (s)

Any ionic compound will dissociate when dissolved in

H2O (aqueous ionic compounds)

Spectator IonsIons that do not

actively participate in a chemical reactions.

Not spectators if:• Change physical state (aq solid)• Form covalent compound (Br- Br2)• Form new covalent compound

(H2O H2S)

Ionic and Net Ionic Equations

3

Ionic EquationAll molecules are included in the chemical equation

Net Ionic EquationSpectator ions have been removed from the

chemical equation

AgNO3 (aq) + NaCl (aq) AgCl (s) + NaNO3 (aq)

Ag+ + Cl- (aq) AgCl (s)

Ag+ + NO3- Na+ + Cl- Na+ + NO3

-AgCl (s)

Ionic and Net Ionic Equations

4

For the following reactions, write a net ionic equation

Ni (s) + Cu(NO3)2 Ni(NO3)2 + Cu (s)

Na(C2H3O2) (aq) + NH4Cl (aq) NH4(C2H3O2) (aq) + NaCl (aq)

FeCl3 (aq) + 3 NaOH (aq) Fe(OH)3 (s) + NaCl (aq)