chapter13_colligativeproperties

chapter13_colligativeproperties - Colligative Properties...

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Colligative Properties Colligative Properties
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Colligative Properties Colligative Properties Freezing-Point Depression Freezing-Point Depression • The solution freezes at a lower temperature ( T f ) than the pure solvent. • Decrease in freezing point ( T f ) is directly proportional to molality ( K f is the molal freezing-point-depression constant): m K T f f = ) ( _ kg mass solute moles K T f f =
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Colligative Properties Colligative Properties Freezing-Point Depression Freezing-Point Depression
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You want to make your own antifreeze for your car, and decide that it must not freeze down to -15 ° C. How much propylene glycol must you add to 10.0L of pure water? m K T f f = C C C O H H H H H O H H H propylene glycol 1,2-propanediol ) ( _ kg mass solute moles K T f f =
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Colligative Properties Colligative Properties Colligative properties depend on quantity of solute molecules. Freezing-Point Depression Freezing-Point Depression Boiling-Point Elevation Boiling-Point Elevation Lowering the Vapor Pressure Lowering the Vapor Pressure Osmosis Osmosis
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Lowering the Vapor Pressure Non-volatile solutes reduce the ability of the surface solvent molecules to escape the liquid. Therefore, vapor pressure is
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This note was uploaded on 04/29/2008 for the course CHEM gen taught by Professor M during the Spring '08 term at Chatham University.

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chapter13_colligativeproperties - Colligative Properties...

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