I argon ii benzene c 6 h 6 iii diethyl ether c 4 h 10

I. Argon
II. Benzene (C
6
H
6
)
III. Diethyl ether (C
4
H
10
O)
IV. Ethanol (C
2
H
6
O)
V. Mercury
VI. Methane (CH
4
)
VII. Water (H
2
O)
A. II, III, and VII
B. I and II
C. V only
D. I, II, and VI
E. III, IV, and VII

227
#3 . Which of these substances are polar? In other words,
which of these substances have a permanent molecular
dipole?
I. Argon
II. Benzene (C
6
H
6
)
III. Diethyl ether (C
4
H
10
O)
IV. Ethanol (C
2
H
6
O)
V. Mercury
VI. Methane (CH
4
)
VII. Water (H
2
O)
A. II, III, and VII
B. I and II
C. V only
D. I, II, and VI
E. III, IV, and VII
Remember: C-H bonds
are NOT polar!

228
#3 . Which of these substances are polar? In other words,
which of these substances have a permanent molecular
dipole?
I. Argon
II. Benzene (C
6
H
6
)
III. Diethyl ether (C
4
H
10
O)
IV. Ethanol (C
2
H
6
O)
V. Mercury
VI. Methane (CH
4
)
VII. Water (H
2
O)
A. II, III, and VII
B. I and II
C. V only
D. I, II, and VI
E. III, IV, and VII
C-O and O-H bonds are
polar.

229
#4 . Which of these substances experience dispersion forces?
A.I and VI
B. V
C. I, II, III, IV,
V, VI, VII
D. III and IV
E. VII only

230
#4 . Which of these substances experience dispersion forces?
A.I and VI
B. V
C. I, II, III, IV,
V, VI, VII
D. III and IV
E. VII only

231
#4 . Which of these substances experience hydrogen
“bonding”?
A.III and VI
B. II and VII
C. IV and VII
D.II, III, IV, VI,
and VII

232
#4 . Which of these substances experience hydrogen
“bonding”?
A.III and VI
B. II and VII
C. IV and VII
D.II, III, IV, VI,
and VII

233
#4 . Which of these substances experience hydrogen
“bonding”?
A.III and VI
B. II and VII
C. IV and VII
D.II, III, IV, VI,
and VII
POLAR
POLAR
POLAR

234
12-6 Thermodynamic Data Comparison
For a particular substance,
∆ 𝐻
???
> ∆ 𝐻
𝑓??

235
12-6 Thermodynamic Data Comparison
For a particular substance,
∆ 𝐻
???
> ∆ 𝐻
𝑓??

236
12-6 Thermodynamic Data Comparison
For a particular substance,
∆ 𝐻
???
> ∆ 𝐻
𝑓??
It takes more energy to completely overcome the
intermolecular forces (liquid  gas) compared to
only overcoming some of the intermolecular
forces (solid  liquid).

237
12-6 Solid-Vapor Equilibrium
Sublimation = the process in which molecules go
directly from the solid phase to the vapor phase.
∆ 𝐻
???
=

238
12-6 Solid-Vapor Equilibrium
Sublimation = the process in which molecules go
directly from the solid phase to the vapor phase.
∆ 𝐻
???
= ∆ 𝐻
𝑓??
+ ∆ 𝐻
???

239
12-6 Solid-Vapor Equilibrium
Sublimation = the process in which molecules go
directly from the solid phase to the vapor phase.
∆ 𝐻
???
= ∆ 𝐻
𝑓??
+ ∆ 𝐻
???
CO
2
(s)

240
12-7 Phase Diagram of Carbon Dioxide

241
12-7 Phase Diagram of Carbon Dioxide
SUBLIMATION

242
12-7 Phase Diagram of Water

243
12-7 Phase Diagram of Water
MELTING
BOILING

244
#5 . Which of these are intermolecular forces?
Additional Practice
I. Non-polar covalent bond
II. Polar covalent bond
III. Ionic bond
IV. Dispersion force
V. Dipole-Dipole Force
VI. Hydrogen “ bond ”
A. I, II, and III
B. I, IV, and VI
C. II and V
D. IV, V, and VI

245
#5 . Which of these are inter molecular forces?