____ 9. Under similar conditions, which of the following gases will behave less
ID: 845170 • Letter: #
Question
____ 9. Under similar conditions, which of the following gases will behave less like an ideal gas than the others?
a.
NH3
d.
H2
b.
HCl
e.
O2
c.
CH4
____ 10. Which of the following compounds would be most soluble in carbon tetrachloride, CCl4?
a.
H2O
d.
C6H6
b.
CH3OH
e.
HCl
c.
NH3
____ 11. A phase diagram shows the states of a substance as a function of _____ and _____.
a.
pressure, volume
d.
concentration, temperature
b.
volume, temperature
e.
density, pressure
c.
pressure, temperature
____ 12. At the point marked with a dot on the phase diagram, the solid will __________
a.
be indistinguishable from the gas.
d.
sublime.
b.
boil.
e.
liquify.
c.
melt.
____ 13. Which of the following substances has a solid whose freezing point will decrease with increasing pressure?
a.
c.
b.
d.
____ 14. The relative energies (strengths) of the intermolecular forces present in each of four different pure substances are shown in the figure below. Which substance is most likely to be a solid at room temperature?
a.
a
c.
c
b.
b
d.
d
____ 15. The temperature at point b in the phase diagram below is the __________
a.
critical point.
d.
normal freezing point.
b.
triple point.
e.
normal boiling point.
c.
transition point.
____ 16. Arrange the following compounds in order of increasing dispersion interactions: CCl4, CH4, C3H8.
a.
CH4 < C3H8 < CCl4
d.
CCl4 < C3H8 < CH4
b.
CCl4 < CH4 < C3H8
e.
CH4 < CCl4 < C3H8
c.
C3H8 < CH4 < CCl4
____ 17. Water contains about 42 mg of oxygen per liter at 20
a.
NH3
d.
H2
b.
HCl
e.
O2
c.
CH4
Explanation / Answer
9=A
10=C
11=D
12=D
13=B
14=E
15=E
16-A
17=A
18=E
19=C
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