Soln Prop1

# Soln Prop1 - Section 15 Solution Properties Colligative...

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Section 15 Solution Properties Colligative Properties The physical characteristics of solutions relative to pure solvent, e.g ., BP, MP, VP, osmotic pressure Changes are a function of the relative quantities of solute particles to solvent particles… Useful concentration terms: molality, mole fraction

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Vapor Pressure Volatile solvent with a nonvolatile solute
Vapor Pressure Volatile solvent with a nonvolatile solute

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Raoult’s Law… P Solv = X Solv Solv P Solv = partial pressure solvent Solv = vapor pressure pure solvent X Solv = mole fraction solvent
Calculate the vapor pressure of water for a solution of 650. g of ethylene glycol (HO-CH 2 CH 2 -OH, nonvolatile) in 1.50 kg of water at 90°C. Given the VP pure H 2 O at 90° is 525.8 mm. Moles H 2 O: 1.50 x 10 3 g x 1 mol = 83.2 mol H 2 O 18.02 g Moles EtGlyc: 650. g x 1 mol = 10.5 mol EtGlyc 62.07 g P H2O = X H2O H2O P H2O = 83. 2 mol 525.8 mm 83.2 mol + 10.5 mol P H2O = .888 525.8 mm P H2O = 457 mm

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Consider two ideal liquids, A and B, where… intermolecular attractive forces: A ↔ A = B B = A
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## This note was uploaded on 11/16/2011 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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Soln Prop1 - Section 15 Solution Properties Colligative...

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