Chemistry II Chapter 12 Intermolecular Forces

13 Questions | Total Attempts: 1141

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Chemistry II Chapter 12 Intermolecular Forces - Quiz

This quiz is to test your knowledge about Chapter 12. Chapter 12 covers information about states of matter, phase changes, and intermolecular forces.


Questions and Answers
  • 1. 
    Which one of the following decreases as the strength of the attractive intermolecular forces increases?
    • A. 

      The heat of vaporization

    • B. 

      The normal boiling temperature

    • C. 

      The extent of deviations from the ideal gas law

    • D. 

      The sublimation temperature of a solid

    • E. 

      The vapor pressure of a liquid

  • 2. 
    Order the intermoleuclar forces from weakest to strongest.
    • A. 

      Dipole-dipole, london dispersion, ionic, hydrogen bonding

    • B. 

      London dispersion, dipole-dipole, hydrogen bonding, ionic

    • C. 

      Hydrogen bonding, dipole-dipole, london dispersion, ionic

    • D. 

      Dipole-dipole, ionic, london dispersion, hydrogen bonding

    • E. 

      London dispersion, ionic, dipole-dipole, hydrogen bonding

  • 3. 
    Which of the following would you expect to have the highest boiling point?
    • A. 

      Fluorine

    • B. 

      Chlorine

    • C. 

      Bromine

    • D. 

      Iodine

    • E. 

      All would have the same boiling point

  • 4. 
    On a relative basis, the weaker the intermoleuclar forces in a substance,
    • A. 

      The greater its heat of vaporization

    • B. 

      The more it deviates from ideal gas behavior

    • C. 

      The greater its vapor pressure at a particular temperature

    • D. 

      The higher its melting point

    • E. 

      None of these

  • 5. 
    Water sits in an open beaker. Assuming contant temperature and pressure, the rate of evaporation decreases as the water evaporates.
    • A. 

      True

    • B. 

      False

  • 6. 
    At normal atmospheric pressure and a temperature of 0oC, which phase(s) of H2O can exist?
    • A. 

      Ice and water

    • B. 

      Ice and water vapor

    • C. 

      Water only

    • D. 

      Water vapor only

    • E. 

      Ice only

  • 7. 
    Assume 12,500 J of energy is added to 2.0 moles of water as an ice sample at 0oC. The heat of fusion is 6.02 kJ/mol. the specific heat of liquid water is 4.18 J/mol K. the heat of vaporization is 40.6 kJ/mol. The resulting sample contains which of the following?
    • A. 

      Only ice

    • B. 

      Ice and water

    • C. 

      Only water

    • D. 

      Water and water vapor

    • E. 

      Only water vapor

  • 8. 
    Which of the following processes must exist in equilibrium with the evaporation process when a measurement of vapor pressure is made?
    • A. 

      Fusion

    • B. 

      Vaporization

    • C. 

      Sublimation

    • D. 

      Boiling

    • E. 

      Condensation

  • 9. 
    What is responsible for capillary action, a property of liquids?
    • A. 

      Surface tension

    • B. 

      Cohesive forces

    • C. 

      Adhesive forces

    • D. 

      Viscosity

    • E. 

      Two of these

  • 10. 
    When a nonpolar liquid displays a convex meniscus, which of the following explains this behavior?
    • A. 

      It has a low surface tension, and therefore clings to the glass

    • B. 

      The cohesive forces are stronger than the adhesive forces toward the glass

    • C. 

      The adhesive forces toward the glass are stronger than the cohesive forces

    • D. 

      The liquid's viscosity is low

    • E. 

      None of these

  • 11. 
    A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the statements bleow is NOT true?
    • A. 

      The partial pressure exerted by the vapor molecules is called teh vapor pressure of the liquid

    • B. 

      Liquid molecules are still evaporating

    • C. 

      The number of vapor molecules remains essentially constant

    • D. 

      The boundary between the liquid and vapor disappears

    • E. 

      All of these are true

  • 12. 
    A cetain substance, X, has a triple-point temperature of 20oC at a pressure of 2.0 atm.Which one of the statements can NOT be true?
    • A. 

      X can exist as a liquid above 20oC

    • B. 

      X can exist as a solid above 20oC

    • C. 

      Liquid X can exist as a stable phase at 25oC and 1 atm

    • D. 

      Both liquid and solid X have the same vapor pressure at 20oC

    • E. 

      All of these could be true

  • 13. 
    The vapor pressure of water is 1.0 atm at 373 K, and the enthalpy of vaporization is 40.7 kJ mol-1. Estimate the vapor pressure at temperature 363
    • A. 

      1.5 atm

    • B. 

      0.697 atm

    • C. 

      760 torr

    • D. 

      490 torr

    • E. 

      12.2 atm

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