Purpose of Experiment 9
become familiar w/ writing equations for metathesis reactions,
including net ionic reactions
Metathesis reaction model
when cations and ions appear to exchange partners
What must happen for a metathesis reaction to lead to a net change in solution?
ions must be removed from the solution
Three driving forces for metathesis to occur
1. Formation of a precipitate
2. The formation of a weak electrolyte or nonelectrolyte
3. The formation of a gas that escapes a solution
Typical reaction with formation of a precipitate
The reaction of barium chloride w/ sivler nitrate
produces AgCl precipitate
Molecular equation
a balanced chemical equation where the ionic compounds are expressed as molecules instead of component ions
Complete ionic equation
A form of writing a balanced equation in which all ions are shown
Net ionic equation
equations that show only the soluble, strong electrolytes reacting (represented as ions) and omit the spectator ions
spectator ions
ions that appear on both sides of a complete ionic reaction and are removed from the complete ionic equation to produce the net ionic equation
these ions exists in the same form on both the reactant and product sides of a reaction. They are unchanged on both sides of a chemical equation and do not affect equilibrium.