1.Which of the following DOES NOT explain why boiling points of solution is greater than the pure solvent? A. non-volatile solute reduces the vapor pressure of the solution B. presence of solute particles increases the vapor pressure of the solution C. solute particles prevent vapor from escaping the solution D. temperature must be raised to restore the vapor pressure of the solution

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter13: Solutions And Their Behavior
Section: Chapter Questions
Problem 75GQ: If a volatile solute is added to a volatile solvent, both substances contribute to the vapor...
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1.Which of the following DOES NOT explain why boiling
points of solution is greater than
the pure solvent?
A. non-volatile solute reduces the vapor pressure of the
solution
B. presence of solute particles increases the vapor pressure
of the solution
C. solute particles prevent vapor from escaping the solution
D. temperature must be raised to restore the vapor
pressure of the solution
2. Which of the following BEST describes why vapor
pressure of a solution is lower than
that of a pure solvent?
A. Both the solvent and solute are non-volatile, thus less
vapor evaporate
B. Less energy is required for the solvent molecules to
evaporate when solute is present
C. More solute particles cover the solution, preventing
solvent molecules to evaporate
D. Solute particles are strongly attracted to the solvent
particles, preventing evaporation
Transcribed Image Text:1.Which of the following DOES NOT explain why boiling points of solution is greater than the pure solvent? A. non-volatile solute reduces the vapor pressure of the solution B. presence of solute particles increases the vapor pressure of the solution C. solute particles prevent vapor from escaping the solution D. temperature must be raised to restore the vapor pressure of the solution 2. Which of the following BEST describes why vapor pressure of a solution is lower than that of a pure solvent? A. Both the solvent and solute are non-volatile, thus less vapor evaporate B. Less energy is required for the solvent molecules to evaporate when solute is present C. More solute particles cover the solution, preventing solvent molecules to evaporate D. Solute particles are strongly attracted to the solvent particles, preventing evaporation
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