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12.157 Desert countries like Saudi Arabia have built reverse osmosis plants to produce freshwater from seawater. Assume that seawa- ter has the composition 0.470 M NaCl and 0.068 M MgCl, and that both compounds are completely dissociated. (a) What is the osmotic pressure of seawater at 25 C7 (b) If the reverse osmosis equipment can exert a maximum pres- sure of 100.0 atm at 25.0 C, what is the maximum volume of freshwater that can be obtained from 1.00 L of seawater?

12.157 Desert countries like Saudi Arabia have built reverse osmosis plants to produce freshwater from seawater. Assume that seawa- ter has the composition 0.470 M NaCl and 0.068 M MgCl, and that both compounds are completely dissociated. (a) What is the osmotic pressure of seawater at 25 C7 (b) If the reverse osmosis equipment can exert a maximum pres- sure of 100.0 atm at 25.0 C, what is the maximum volume of freshwater that can be obtained from 1.00 L of seawater?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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12.157
o is disSsOciatedr 12.156 A 1.24 M solution of KI has a density of 1.15 g/cm. (a) What is the molality of the solution? (b) What is the freezing point of the solution, assuming complete dissociation of KI? 12.161 () The actual freezing point of the solution is -4.46 °C. What percent of the KI is dissociated? 12.157 Desert countries like Saudi Arabia have built reverse osmosis plants to produce freshwater from seawater. Assume that seawa- ter has the composition 0.470M NaCl and 0.068 M MgCl, and that both compounds areſcompletely dissociated. (a) What is the osmotic pressure of seawater at 25 C? (b) If the reverse osmosis equipment can exert a maximum pres- sure of 100.0 atm at 25.0 "C, what is the maximum volume of freshwater that can be obtained from 1.00 L of seawater? 12.162 12.158 A solution prepared by dissolving 100.0 g of a mixture of sugar (C,H,,O,,) and table salt (NaCl) in 500.0 g of water has a Ireez- ing point of - 2.25 C. What is the mass of cach indrvidual solute? Assume that NaCl is completely dissociated. 12.159 A solutuon of 0.250 g ol naphthalene (mothballs) in 5.00 g of camphor lowers the freezing point by 2 10 GWhat is the molar 12.163
Transcribed Image Text:o is disSsOciatedr 12.156 A 1.24 M solution of KI has a density of 1.15 g/cm. (a) What is the molality of the solution? (b) What is the freezing point of the solution, assuming complete dissociation of KI? 12.161 () The actual freezing point of the solution is -4.46 °C. What percent of the KI is dissociated? 12.157 Desert countries like Saudi Arabia have built reverse osmosis plants to produce freshwater from seawater. Assume that seawa- ter has the composition 0.470M NaCl and 0.068 M MgCl, and that both compounds areſcompletely dissociated. (a) What is the osmotic pressure of seawater at 25 C? (b) If the reverse osmosis equipment can exert a maximum pres- sure of 100.0 atm at 25.0 "C, what is the maximum volume of freshwater that can be obtained from 1.00 L of seawater? 12.162 12.158 A solution prepared by dissolving 100.0 g of a mixture of sugar (C,H,,O,,) and table salt (NaCl) in 500.0 g of water has a Ireez- ing point of - 2.25 C. What is the mass of cach indrvidual solute? Assume that NaCl is completely dissociated. 12.159 A solutuon of 0.250 g ol naphthalene (mothballs) in 5.00 g of camphor lowers the freezing point by 2 10 GWhat is the molar 12.163
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