4.16 - Intermolecular Forces - 2015

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4.16 - Intermolecular Forces - 2015 - Quiz

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Questions and Answers
  • 1. 
    Determine the main type of intermolecular forces in CaO (aq).
    • A. 

      London Dispersion Forces

    • B. 

      Ion-Dipole Forces

    • C. 

      Dipole-Dipole Forces

    • D. 

      Hydrogen Bonds

  • 2. 
    Determine the main type of intermolecular forces in C2H5OH.
    • A. 

      London Dispersion Forces

    • B. 

      Ion-Dipole Forces

    • C. 

      Dipole-Dipole Forces

    • D. 

      Hydrogen Bonds

  • 3. 
    Determine the main type of intermolecular forces in PH3.
    • A. 

      London Dispersion Forces

    • B. 

      Ion-Dipole Forces

    • C. 

      Dipole-Dipole Forces

    • D. 

      Hydrogen Bonds

  • 4. 
    Determine the main type of intermolecular forces in CCl4.
    • A. 

      London Dispersion Forces

    • B. 

      Ion-Dipole Forces

    • C. 

      Dipole-Dipole Forces

    • D. 

      Hydrogen Bonds

  • 5. 
    Based on the ion shown, which side of water molecules should be touching the ion?
    • A. 

      The partial negative end must be touching the Br^- ion, since like charges between partial negative end (O) in water and the negative ion attract.

    • B. 

      The partial negative end must be touching the Br^- ion, since opposite charges between partial positive end (O) in water and the negative ion attract.

    • C. 

      The partial positive end must be touching the Br^- ion, since opposite charges between partial positive end (H) in water and the negative ion attract.

    • D. 

      None of the above

  • 6. 
    At standard pressure, NH3 has a boiling point of 240 K, AsH3 has a boiling point of 211 K, and PH3 has a boiling point of 186 K. What accounts for the higher boiling point of NH3?
    • A. 

      NH3 has a higher boiling point, because it contains London forces.

    • B. 

      NH3 has a higher boiling point, because it contains hydrogen bonds.

    • C. 

      NH3 has a higher boiling point, because it contains dipole-dipole forces.

    • D. 

      NH3 has a higher boiling point, because it contains ion-dipole forces.

  • 7. 
    At standard pressure, HF has a higher boiling point than HCl, HBr, or H2 does. What accounts for the higher boiling point of HF?
    • A. 

      HF has a higher boiling point, because it contains London forces.

    • B. 

      HF has a higher boiling point, because it contains hydrogen bonds.

    • C. 

      HF has a higher boiling point, because it contains dipole-dipole forces.

    • D. 

      HF has a higher boiling point, because it contains ion-dipole forces.

  • 8. 
    Compounds like CuO and NaHCO3 are soluble in water. Compare the boiling point of a solution of CuO to the boiling point of water at standard pressure.
    • A. 

      The solution of CuO has a higher boiling point than water does.

    • B. 

      Water has a higher boiling point than the CuO solution does.

  • 9. 
    A mixture contains hydrogen fluoride and ammonia. Identify a strong intermolecular force of attraction between hydrogen fluoride and ammonia.
    • A. 

      Dipole-Dipole Forces

    • B. 

      Hydrogen Bonding

    • C. 

      Ion-Dipole Forces

    • D. 

      London Dispersion Forces

  • 10. 
    Rank the following molecules in order of increasing boiling point: NaF (aq), H2S, HF, CO2.
    • A. 

      NaF (aq) < H2S < HF < CF4

    • B. 

      H2S < CO2 < HF < NaF (aq)

    • C. 

      CO2 < H2S < HF < NaF (aq)

    • D. 

      CO2 < HF < H2S < NaF (aq)

  • 11. 
    Rank the following molecules in order of increasing boiling point: CH3Cl, CH3OH, Na2O (aq),  CF4.
    • A. 

      CF4 < CH3OH < CH3Cl < Na2O (aq)

    • B. 

      CF4 < CH3Cl < CH3OH < Na2O (aq)

    • C. 

      CF4 < Na2O (aq) < CH3Cl < CH3OH

    • D. 

      CF4 < Na2O (aq) < CH3OH < CH3Cl

  • 12. 
    Which element combines with hydrogen to form a compound with the strongest hydrogen bonding between its molecules?
    • A. 

      Sulfur

    • B. 

      Tellurium

    • C. 

      Selenium

    • D. 

      Oxygen

  • 13. 
    Substance A has a boiling point of 13 degrees Celsius, Substance B has a boiling point of 20 degrees Celsius, Substance C has a boiling point of 23 degrees Celsius, Substance D has a boiling point of 12 degrees Celsius. Which substance has the strongest intermolecular forces?
    • A. 

      Substance A

    • B. 

      Substance B

    • C. 

      Substance C

    • D. 

      Substance D

  • 14. 
    At standard pressure, HF and NH3 have higher boiling points than HBr and CH4 do. What accounts for the higher boiling point of HF?
    • A. 

      NH3 and HF have higher boiling points, because they contain London Forces.

    • B. 

      NH3 and HF have higher boiling points, because they contain hydrogen bonds.

    • C. 

      NH3 and HF have higher boiling points, because they contain dipole-dipole forces.

    • D. 

      NH3 and HF have higher boiling points, because they contain ion-dipole forces.

  • 15. 
    At standard pressure, H2Se and CO have higher boiling points than CF4 and CO2 do. What accounts for the higher boiling point of HF?
    • A. 

      H2Se and CO have higher boiling points, because they contain London Forces.

    • B. 

      H2Se and CO have higher boiling points, because they contain hydrogen bonds.

    • C. 

      H2Se and CO have higher boiling points, because they contain dipole-dipole forces.

    • D. 

      H2Se and CO have higher boiling points, because they contain ion-dipole forces.

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