Ch 13 - Relative Colligative Properties of Electrolytes

Colligative properties

• Def: properties that depend only on the concentration of solute particles

properties that depend only on the concentration of solute particles

Define Colligative properties:

Strong Electrolytes

• Def: Electrolytes that dissociate completely into ions when they dissolve

Electrolytes that dissociate completely into ions when they dissolve

Define Strong Electrolytes:

Boiling point elevation (∆Tb)

• ∆Tb = Kb m

• increases with increasing concentration

Freezing point depression (∆Tf)

• ∆Tf = Kf m

• increases with increasing concentration

Tb = Tb° + ∆Tb

Boiling point (Tb) equation, using boiling point elevation (∆Tb):

Tf = Tf° - ∆Tf

Freezing point (Tf) equation, using freezing point depression (∆Tf):

We know the solvent in a solution is water if the chemical equation products show (aq) bc = aqueous which = dissolve in WATER

Remember: We know the solvent in a solution is water if the chemical equation products show (aq) bc = aqueous which = dissolve in WATER