1442test1 - 1442 Text One Chapters 12 13 Intermolecular...

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1442 Text One Chapters 12 & 13 Intermolecular Forces, Properties of Solutions (Silberberg) website: http://dipowell1.home.mindspring.com Useful Information: R = 0.08206 L . atm/mol . K = 8.314 J/mol . K 1 atm = 760 torr = 760 mm Hg P soln = (P solv ) (X solv ) π = MRT ( R = 0.0821 Latm/mol K) T f = imK f ( or T b ) P soln = (P solv ) ( X solute ) P total = P A X a + P b X b (two volatile liquids) Intermolecular Attractions: Likes dissolve Likes 1. What is the strongest intermolecular force in each (a) H 2 O (b) CH 4 (c) NaF (d) HCl (e) Xe 2. Which solute below is expected to be more soluble in CH 4 than in H 2 O (a) NH 4 Cl (b) HCl (c) KCl (d) CH 3 CH 2 CH 2 CH 3 (f) HF 3. What is the interaction between CCl 4 and KCl? (a) ion-ion (b) ion-dipole (c) London Dispersion-ion (d) Hydrogen Bonding- dipole Molality 4. 45 g of NaOH is dissolved in 100 ml of water. (a) What is the m of the solution. The density of water is 1g/ml. (b) If the density of the NaOH solution is 1.5 g/ml, what is the M of the solution? 5. A certain aqueous solution is 50% HCl by mass. The density of the solution is 1.2 g/cm 3 . What is the concentration of HCl expressed in molality? Colligative Properties van’t Hoff factor, i. How an ionizing compound works.
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