Chapter 12 Quiz

Instructions
Chapter 12 quiz.

This assessment is worth 100 points.

  1. Use the Clausius-Clapeyron equation to estimate the boiling point of water at 24.0 torr pressure (the average Hvap over the temperature range is 10.12 kcal/mol).   (10 points)

    a.  
    b.  
    c.  
    d.  

  2. The increase in boiling points of the halogens down the group is a result of:   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  3. According to the band theory, which of the following provide an explanation for the high electrical conductivity of metals? 1. a partly filled conduction band 2. a valence band overlapping an empty conduction band 3. a filled valence band 4. a large gap between the valence band and the conduction band   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  4. Supercooling is:   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  5. The heat of sublimation of a substance is   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  6. Krypton crystallizes in a structure that has four Kr atoms in each unit cell, and the unit cell is a cube. The edge length of the unit cell is 0.559 nm. Calculate the density of crystalline Kr in kg/m3.   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  7. Butter, like glass, melts over a range of temperatures, rather than with a sharp melting point. Butter might be classified as a/an:   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  8. The boiling point of a substance is most strongly influenced by:   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  9. The freeze drying process represents what phase change?   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  

  10. The Clausius-Clapeyon equation is used to:   (10 points)

    a.  
    b.  
    c.  
    d.  
    e.  



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