StudentLecture_18 - Lecture 18 10/29/2009 Lecture 18...

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1 Lecture 18 10/29/2009 Lecture 18 Colligative Properties Reading for this lecture: Section 14.4 Reading for next lecture: Biochemistry Interchapter, pp 497-512; page 473, A Closer Look Lab next week: Organic reactions, Chapter 8
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2 Freezing a purple solution. Solutions have different properties than pure liquids.
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3 Colligative Properties Solutions homogeneous, mixed at the atomic/molecular scale Solubility (moles of solute / L of solvent, etc) Affected/determined by IMF’s Phases All combinations of sol/liq/gas. (gas in liq, liq in liq, for example) Energy Considerations Energy to separate components, energy from mixing, disorder __________________ Properties Solution properties ______________________ than properties of the individual components.
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4 Colligative Properties Properties that are affected by the ____________ of solute particles in the solution, regardless of type. Vapor Pressure Boiling Point Freezing Point Osmotic Pressure
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Vapor Pressure Definition: Vapor pressure is the __________________ pressure of a vapor above its liquid; The pressure of the vapor resulting from ______________________ of a liquid above a sample of the liquid in a closed container. Solids can have vapor pressures
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This note was uploaded on 02/21/2010 for the course CHEM 115 taught by Professor L during the Spring '02 term at Purdue University-West Lafayette.

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StudentLecture_18 - Lecture 18 10/29/2009 Lecture 18...

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