Colligative Properties PowerPoint

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Exothermic Heat of Solution• Other materials, like CaCl 2 , release heatas they dissolve.• The released energy makes the solutionwarmer.• Since the dissolving process loses heat,the system is going downhillenergetically, and ΔH is negative.
Exothermic Heat of SolutionCaCl 2 (s)ΔHChange inenthalpyDownhill meansΔH is negative.CaCl 2 (aq)Time
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 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: Endothermic Heat of SolutionNH 4 Cl
Page 31 and 32: Calculating Heat Exchange• A simp
Page 33 and 34: Calculating Heat Exchange• The sp

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