Colligative Properties PowerPoint

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Changes in Vapor Pressure• Solvent moleculesmust be at thesurface of the liquidto evaporate.• A surface moleculegets bumped frombelow and is“launched” into thevapor phase.
Solution Vapor Pressure• But what happens tothe chance of asolvent moleculeescaping if there aresolute particles inthe solution?• The red soluteparticles reduce thechances of escape.• Thus, VP is lower forthe solution.
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: Changes in Vapor Pressure• Animat
Page 15 and 16: Boiling Point Elevation• There is
Page 17 and 18: Freezing Solutions• Solutions typ
Page 19 and 20: Practical Applications• Antifreez
Page 21 and 22: The van’t Hoff Factor• We have
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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