Colligative Properties PowerPoint

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Practical Applications• One of my favorite applications involvingfreezing point depression is making icecream.• The ice cream mix is milk, cream and sugar.• Around the ice cream container is a mix ofwater ice and rock salt.• The ice/salt mix gets colder than the freezingpoint of the ice cream mixture.
The van’t Hoff Factor• We have learned that when ionic solids(or any electrolyte) dissolve in water,they split up into multiple parts.• CaCl 2 (s) Ca 2+ (aq) + Cl - (aq) + Cl - (aq)• 1 molecule 3 ionic particles• <strong>Colligative</strong> properties depend on theconcentration of dissolved particles, notwhat kind of particles they are.
Page 1 and 2: Colligative PropertiesThe Physical
Page 3 and 4: Molality• Molality measures the m
Page 5 and 6: Molality• Example:What is the mol
Page 7 and 8: Molality• Determine the molality
Page 9 and 10: Molality• Convert grams of solven
Page 11 and 12: Changes in Vapor Pressure• Animat
Page 13 and 14: Solution Vapor Pressure• But what
Page 15 and 16: Boiling Point Elevation• There is
Page 17 and 18: Freezing Solutions• Solutions typ
Page 19: Practical Applications• Antifreez
Page 23 and 24: The van’t Hoff Factor• ΔT b =
Page 25 and 26: Heat of Solution• Most materials
Page 27 and 28: Endothermic Heat of SolutionNH 4 Cl
Page 29 and 30: Exothermic Heat of SolutionCaCl 2 (
Page 31 and 32: Calculating Heat Exchange• A simp
Page 33 and 34: Calculating Heat Exchange• The sp

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