Lesson 8: Reactions of Ions in Solution

High solubility is a termed used when 0.1 mol/L or greater is maximum concentration a solute can dissolve in water.

Low solubility is when less than 0.1 mol/L is the maximum concentration a solute can dissolve in water.

Nothing is insoluble but we use the term to mean negligible solubility (the amount dissolved is very hard to detect

A Total Ionic Equation is a chemical equation in which all highly soluble ionic compounds are written as dissociated ions.

Barium chloride + sodium sulfate → barium sulfate and sodium chloride

BaCl2(aq) + Na2SO4(aq) → BaSO4(aq)+ 2 NaCl(aq)

Ba2+(aq) + 2 Cl-(aq) + 2 Na+(aq) + SO4^2-(aq)→ BaSO4(s) + 2 Na+(aq) + 2 Cl-(aq)

A Net ionic equation is a chemical that includes only the entities that react during the reaction.

Those entities that are not involved in a chemical reaction are called spectator ions

TIE Ba2+(aq) + 2 Cl-(aq) + 2 Na+(aq) + SO42-(aq)→ BaSO4(s) + 2 Na+(aq) + 2 Cl-(aq)

NIE Ba2+(aq) + SO42-(aq)→ BaSO4(s)

Spectator ions are: Na+(aq) & Cl-(aq)