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Vapor Pressure Lowering The vapor pressure of a pure solvent is REDUCED when a nonvolatile solute is added. This is summarized by Raoult's Law: Psolution Xsolvent Posolvent Where: Psolution is the vapor pressure of the solution Xsolvent is the mole fraction of the solvent in the solution (mol solvent)/(mol solvent + mol solute) Po solvent is the vapor pressure of the pure solvent As more solute particles are added, the mole fraction of the solvent goes down, and the vapor pressure is reduced. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is cholesterol. Calculate the vapor pressure of the solution at 25 °C when 11.47 grams of cholesterol, C27H460 (386.6 g/mol), are dissolved in 169.0 grams of benzene. benzene C6H6 = 78.12 g/mol. VP(solution) = Submit Answer mm Hg Retry Entire Group 2 more group attempts remaining

Vapor Pressure Lowering The vapor pressure of a pure solvent is REDUCED when a nonvolatile solute is added. This is summarized by Raoult's Law: Psolution Xsolvent Posolvent Where: Psolution is the vapor pressure of the solution Xsolvent is the mole fraction of the solvent in the solution (mol solvent)/(mol solvent + mol solute) Po solvent is the vapor pressure of the pure solvent As more solute particles are added, the mole fraction of the solvent goes down, and the vapor pressure is reduced. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is cholesterol. Calculate the vapor pressure of the solution at 25 °C when 11.47 grams of cholesterol, C27H460 (386.6 g/mol), are dissolved in 169.0 grams of benzene. benzene C6H6 = 78.12 g/mol. VP(solution) = Submit Answer mm Hg Retry Entire Group 2 more group attempts remaining

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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Vapor Pressure Lowering The vapor pressure of a pure solvent is REDUCED when a nonvolatile solute is added. This is summarized by Raoult's Law: Psolution Xsolvent Posolvent Where: Psolution is the vapor pressure of the solution Xsolvent is the mole fraction of the solvent in the solution (mol solvent)/(mol solvent + mol solute) Po solvent is the vapor pressure of the pure solvent As more solute particles are added, the mole fraction of the solvent goes down, and the vapor pressure is reduced. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is cholesterol. Calculate the vapor pressure of the solution at 25 °C when 11.47 grams of cholesterol, C27H460 (386.6 g/mol), are dissolved in 169.0 grams of benzene. benzene C6H6 = 78.12 g/mol. VP(solution) = mm Hg Submit Answer Retry Entire Group 2 more group attempts remaining
Transcribed Image Text:Vapor Pressure Lowering The vapor pressure of a pure solvent is REDUCED when a nonvolatile solute is added. This is summarized by Raoult's Law: Psolution Xsolvent Posolvent Where: Psolution is the vapor pressure of the solution Xsolvent is the mole fraction of the solvent in the solution (mol solvent)/(mol solvent + mol solute) Po solvent is the vapor pressure of the pure solvent As more solute particles are added, the mole fraction of the solvent goes down, and the vapor pressure is reduced. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is cholesterol. Calculate the vapor pressure of the solution at 25 °C when 11.47 grams of cholesterol, C27H460 (386.6 g/mol), are dissolved in 169.0 grams of benzene. benzene C6H6 = 78.12 g/mol. VP(solution) = mm Hg Submit Answer Retry Entire Group 2 more group attempts remaining
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