10 - Solubility Equilibria

What does Ksp mean?

Solubility product constant

Maximum limit of dissolved ions a solution can hold at equilibrium

What does Qsp mean?

Solubility product quotient

The amount of ions that are currently dissolved in the solution

How do you calculate solubility?

By using an ICE table and then using the Ksp value to find each value

How do you calculate solubility with the common ion effect?

By using an ICE table and then using the Ksp value to find each value

• But remember to account for the initial concentrations

Waht does the common ion effect state?

States that there will be a reduction in solubility of an ionic compound by adding another substance that shares an ion with the solution

If Qsp<Ksp

The solution is unsaturated, more solid can dissolve and no precipitate will form

If Qsp>Ksp

The solution is supersaturated and the solution cannot hold this many ions so precipitate will form

If Qsp=Ksp

The solution is saturated and the solution is perfectly balanced

What is the effect of complex ion formation on solubility

Increases solubility because it turns one of the common ions into something else