Quiz 3 material

Quiz 3 material - Casey Roche Quiz 3 Material E....

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Casey Roche Quiz 3 Material E. Colligative Properties: a. Affected by the number of solute particles i. Vapor Pressure 1. rate of evaporation slows due to pressure of solute 2. RAULTS LAW a. Vapor pressure of components of a solution b. = * Pa χa P∘a i. Pa= vapor pressure of substance A ii. = χa Mole fraction of A iii. P∘a = vapor pressure of pure A ii. Boiling Point Elevation 1. non volatile solute a. decreases vapor pressure of solvent b. raises boiling point i. = * Tb Kb m 1. K = constant specific to solvent 2. = m concentration of solute in molality 3. = Tb change in pure solvent iii. Freezing Point Depression i. △ =- * Tf Kf m 1. - = Kf freezing point constant 2. = m molality
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iv. Applications of Boiling point elevation and freezing point depression 1. Determination of molecular weight v. Osmosis and Osmotic Pressure 1. Net migration of solvent from a solution with a low concentration of solute to one with a high concentration of solute through a semi- permeable membrane
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Quiz 3 material - Casey Roche Quiz 3 Material E....

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