Question 1

The phase diagram of a substance can be used to obtain the vapor pressure of that substance at a given temperature.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following liquids is likely to have the highest surface tension?

Accepted Answer

A)  Br 2
B)  C 8H 18
C)  CH 3OCH 3
D)  CH 3OH
E)  PbF) B) and E)
G) B) and D)

Question 3

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Accepted Answer

A)  CCl 4, CI 4
B)  H 2O, H 2Se
C)  C 6H 14, C 4H 10
D)  NH 3, NF 3
E)  None of these choices are correct.F) B) and D)
G) A) and D)

Question 4

Which of the following should have the lowest boiling point?

Accepted Answer

A)  C 5H 12
B)  C 6H 14
C)  C 8H 18
D)  C 10H 22
E)  C 12H 26F) D) and E)
G) None of the above

Question 5

The highest temperature at which superconductivity has been achieved is approximately

Accepted Answer

A)  4 K.
B)  30 K.
C)  70 K.
D)  100 K.
E)  130 K.F) A) and D)
G) D) and E)

Question 6

A single water molecule can participate in at most two hydrogen bonds at any instant.

Accepted Answer

A) True 
 B)False

Question 7

The coordination number of sodium and chloride ions in the NaCl lattice, are, respectively

Accepted Answer

A)  10 and 10
B)  8 and 8
C)  6 and 6
D)  4 and 4
E)  None of these choices are correct.F) B) and C)
G) A) and E)

Question 8

In cubic closest packing, the unit cell is body-centered cubic.

Accepted Answer

A) True 
 B)False

Question 9

A 5.00 g sample of water vapor, initially at 155°C is cooled at atmospheric pressure, producing ice at −55°C. Calculate the amount of heat energy lost by the water sample in this process, in kJ. Use the following data: specific heat capacity of ice is 2.09 J/g·K; specific heat capacity of liquid water is 4.18 J/g·K; specific heat capacity of water vapor is 1.84 J/g·K; heat of fusion of ice is 336 J/g; heat of vaporization of water is 2260 J/g.

Accepted Answer

A)  15.6 kJ
B)  10.2 kJ
C)  5.4 kJ
D)  3.2 kJ
E)  1.6 kJF) A) and B)
G) B) and E)

Question 10

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Accepted Answer

A)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus.
B)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a concave meniscus.
C)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus.
D)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a concave meniscus.
E)  None of these choices are correct.F) B) and E)
G) A) and B)

Question 11

Crystal structures may be conveniently measured using

Accepted Answer

A)  X-ray diffraction.
B)  infrared spectroscopy.
C)  ultraviolet-visible spectroscopy.
D)  microwave spectroscopy.
E)  magnetic resonance imaging.F) A) and C)
G) A) and B)

Question 12

Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measured at atmospheric pressure?

Accepted Answer

A)  Melting point
B)  Boiling point
C)  Triple point
D)  Heat of fusion
E)  Heat of vaporizationF) C) and D)
G) B) and C)

Question 13

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Accepted Answer

A)  Se 2−, S 2−
B)  I, I −
C)  Mg 2+, Mg
D)  Br, I
E)  None of these choices are correct.F) None of the above
G) B) and D)

Question 14

Consider the following phase diagram and identify the process occurring as one goes from point C to point D.

Accepted Answer

A)  Increasing temperature with a phase change from solid to liquid
B)  Increasing temperature with a phase change from solid to vapor
C)  Increasing temperature with a phase change from liquid to vapor
D)  Increasing temperature with no phase change
E)  Increasing temperature beyond the critical pointF) None of the above
G) A) and E)

Question 15

Which of the following properties measures the energy needed to increase the surface area of a liquid?

Accepted Answer

A)  Capillary action
B)  Surface tension
C)  Viscosity
D)  Cohesion
E)  Specific elasticityF) C) and E)
G) A) and D) B

Question 16

When silicon is doped with an element from group 3A(13) , the device/material produced is a/an

Accepted Answer

A)  intrinsic semiconductor.
B)  p-type semiconductor.
C)  n-type semiconductor.
D)  p-n junction.
E)  transistor.F) A) and C)
G) D) and E) B

Question 17

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. Estimate the value for the heat of sublimation.

Accepted Answer

A)  35.1 kJ/mol
B)  13.5 kJ/mol
C)  −13.5 kJ/mol
D)  −35.1 kJ/mol
E)  None of these choices are correctF) All of the above
G) B) and E) A

Question 18

In the packing of identical atoms with cubic unit cells, the packing efficiency increases as the coordination number increases.

Accepted Answer

A) True 
 B)False

Question 19

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following statements about the packing of monatomic solids with different unit cells is incorrect?

Accepted Answer

A)  The coordination number of atoms in hcp and fcc structures is 12.
B)  The coordination number of atoms in simple cubic structures is 6.
C)  The coordination number of atoms in bcc structures is 8.
D)  A bcc structure has a higher packing efficiency than a simple cubic structure.
E)  A bcc structure has a higher packing efficiency than a fcc structure.F) B) and E)
G) C) and D)

Exam 12: Intermolecular Forces: Liquids, Solids, and Phase Changes

The phase diagram of a substance can be used to obtain the vapor pressure of that substance at a given temperature.

Correct Answer
verified

Which of the following liquids is likely to have the highest surface tension?

Correct Answer
verified

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Correct Answer
verified

Which of the following should have the lowest boiling point?

Correct Answer
verified

The highest temperature at which superconductivity has been achieved is approximately

Correct Answer
verified

A single water molecule can participate in at most two hydrogen bonds at any instant.

Correct Answer
verified

The coordination number of sodium and chloride ions in the NaCl lattice, are, respectively

Correct Answer
verified

In cubic closest packing, the unit cell is body-centered cubic.

Correct Answer
verified

Correct Answer
verified

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Correct Answer
verified

Crystal structures may be conveniently measured using

Correct Answer
verified

Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measured at atmospheric pressure?

Correct Answer
verified

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Correct Answer
verified

Consider the following phase diagram and identify the process occurring as one goes from point C to point D.

Correct Answer
verified

Which of the following properties measures the energy needed to increase the surface area of a liquid?

Correct Answer
verified
B

When silicon is doped with an element from group 3A(13) , the device/material produced is a/an

Correct Answer
verified
B

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. Estimate the value for the heat of sublimation.

Correct Answer
verified
A

In the packing of identical atoms with cubic unit cells, the packing efficiency increases as the coordination number increases.

Correct Answer
verified

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

Correct Answer
verified

Which of the following statements about the packing of monatomic solids with different unit cells is incorrect?

Correct Answer
verified

Exam 12: Intermolecular Forces: Liquids, Solids, and Phase Changes

The phase diagram of a substance can be used to obtain the vapor pressure of that substance at a given temperature.

Correct AnswerverifiedShow Answer

Which of the following liquids is likely to have the highest surface tension?

Correct AnswerverifiedShow Answer

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Correct AnswerverifiedShow Answer

Which of the following should have the lowest boiling point?

Correct AnswerverifiedShow Answer

The highest temperature at which superconductivity has been achieved is approximately

Correct AnswerverifiedShow Answer

A single water molecule can participate in at most two hydrogen bonds at any instant.

Correct AnswerverifiedShow Answer

The coordination number of sodium and chloride ions in the NaCl lattice, are, respectively

Correct AnswerverifiedShow Answer

In cubic closest packing, the unit cell is body-centered cubic.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Correct AnswerverifiedShow Answer

Crystal structures may be conveniently measured using

Correct AnswerverifiedShow Answer

Which one of the following quantities is generally not obtainable from a single heating or cooling curve of a substance, measured at atmospheric pressure?

Correct AnswerverifiedShow Answer

Which of the following pairs is arranged with the particle of higher polarizability listed first?

Correct AnswerverifiedShow Answer

Consider the following phase diagram and identify the process occurring as one goes from point C to point D.

Correct AnswerverifiedShow Answer

Which of the following properties measures the energy needed to increase the surface area of a liquid?

Correct AnswerverifiedB

When silicon is doped with an element from group 3A(13) , the device/material produced is a/an

Correct AnswerverifiedB

Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. Estimate the value for the heat of sublimation.

Correct AnswerverifiedA

In the packing of identical atoms with cubic unit cells, the packing efficiency increases as the coordination number increases.

Correct AnswerverifiedShow Answer

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

Correct AnswerverifiedShow Answer

Which of the following statements about the packing of monatomic solids with different unit cells is incorrect?

Correct AnswerverifiedShow Answer

Correct Answer
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B

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B

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A

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