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Lecture 11 - 6. OsmoticPressure,Osmosis,andOsmolarity...

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6 4 Concentration Dependent Solution Properties 6.4 Concentration Dependent Solution Properties •Vapor Pressure Lowering •Freezing Point Depression and Boiling Point Elevation •Calculating Freezing Points and Boiling Points of Aqueous Solutions •Osmotic Pressure, Osmosis, and Osmolarity 6.5 Aqueous Solutions •Water as a Solvent •Electrolytes in Solution •Biological Effects of Electrolytes in Solution General, Organic and Biochemistry 7 th Edition
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6.4 Concentration Dependent Solution Properties Colligative properties properties of solutions that depend on the concentration of the solute particles , rather than the identity of the solute Four colligative properties of solutions 1. vapor pressure lowering 2. boiling point elevation f d 3. freezing point depression 4. osmotic pressure Vapor Pressure of a Liquid Vapor pressure of a solution results from escape of solvent molecules from liquid to gas phase Partial pressure of gas phase solvent molecules increases until equilibrium vapor pressure is reached Presence of solute molecules hinders escape of solvent molecules, lowering equilibrium vapor pressure
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