Question 42 Why does the vapor pressure of water decrease when we add NaCl to it? A The ion-dipole attractions of the water to the NaCl, since stronger than water'd H-bonding, make water less willing to evaporate. B с The vapor pressure actually increases because water wants to get away from the NaCl and try to be pure again. E Only the liquid at the surface evaporates, so when we add the NaCl, some of it will take up some of the surface spots decreasing the amount of water molecules who have the opportunity to evaporate. (D) None of these are correct. Since the water is now trying to separate the sodium ions Wom the chloride ions, the water molecules are too busy to evaporate.

Question 42 Why does the vapor pressure of water decrease when we add NaCl to it? A The ion-dipole attractions of the water to the NaCl, since stronger than water'd H-bonding, make water less willing to evaporate. B с The vapor pressure actually increases because water wants to get away from the NaCl and try to be pure again. E Only the liquid at the surface evaporates, so when we add the NaCl, some of it will take up some of the surface spots decreasing the amount of water molecules who have the opportunity to evaporate. (D) None of these are correct. Since the water is now trying to separate the sodium ions Wom the chloride ions, the water molecules are too busy to evaporate.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter11: Intermolecular Forces And Liquids

Section: Chapter Questions

Problem 19PS

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