Question 1

Place the following compounds in order of increasing strength of intermolecular forces. CO2 F2 NH2CH3

Accepted Answer

A)  NH2CH3 2 2
B)  F2 2CH3 2
C)  NH2CH3 2 2
D)  F2 2 2CH3
E)  CO2 2CH3 2

Question 2

Define viscosity.

Accepted Answer

Viscosity ...

Question 3

The energy required to increase the surface area of a liquid by a unit amount is called ________.

Accepted Answer

A)  viscosity
B)  surface tension
C)  dipole-dipole force
D)  hydrogen bonding
E)  capillary action

Question 4

Describe the difference between the conduction band and the valence band.

Accepted Answer

The valence band is the group of highest...

Question 5

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g mol-1) from a solid at -154.0 °C to a liquid at -42. 0°C? The following physical data may be useful: ΔfusH = 7.27 kJ mol-1
Cliq = 2.16 J g-1 °C-1
Cgas = 1.29 J g-1 °C-1
Csol = 1.65 J g-1 °C-1
Tmelting = -95.0 °C

Accepted Answer

A)  8.48 kJ
B)  18.5 kJ
C)  32.2 kJ
D)  29.4 kJ
E)  9.97 kJ

Question 6

Place the following substances in order of decreasing vapour pressure at a given temperature. PF5 BrF3 CF4

Accepted Answer

A)  BrF3 > PF5 > CF4
B)  BrF3 > CF4 > PF5
C)  PF5 > BrF3 > CF4
D)  CF4 > BrF3 > PF5
E)  CF4 > PF5 > BrF3

Question 7

Match the following.

-LiI + H2O

Accepted Answer

A)  dispersion forces
B)  dipole-dipole forces
C)  ion-dipole forces
D)  hydrogen bonding
E)  ionic bondF) H2 + H2O

Question 8

Consider the phase diagram shown. Choose the statement below that is TRUE. vapH. E) None of the above is true." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  The triple point of this substance occurs at a temperature of 31 °C.
B)  At 10 bar of pressure, there is no temperature where the liquid phase of this substance would exist.
C)  The solid phase of this substance is higher in density than the liquid phase.
D)  The line separating the solid and liquid phases represents the ΔvapH.
E)  None of the above is true.

Question 9

Which of the following statements is TRUE?

Accepted Answer

A)  Intermolecular forces are generally stronger than bonding forces.
B)  The potential energy of molecules decrease as they get closer to one another.
C)  Energy is given off when the attraction between two molecules is broken.
D)  Increasing the pressure on a solid usually causes it to become a liquid.
E)  None of the above is true.

Question 10

Define deposition.

Accepted Answer

A)  A liquid becomes a gas.
B)  A gas becomes a liquid.
C)  A gas becomes a solid.
D)  A solid becomes a gas.
E)  A solid becomes a liquid.

Question 11

Which of the following is considered an atomic solid?

Accepted Answer

A)  Br2
B)  CsCl
C)  N2
D)  Nb
E)  None of these is an atomic solid.

Question 12

The enthalpy change for converting 10.0 g of ice at -25.0 °C to water at 80.0 °C is ________ kJ. The specific heats of ice, water, and steam are 2.09 J g-1 °C-1, 4.18 J g-1 °C-1, and 1.84 J g-1 °C-1, respectively. For H2O, ΔfusH = 6.01 kJ mol-1, and ΔvapH = 40.67 kJ mol-1.

Accepted Answer

A)  12.28
B)  6.16
C)  3870
D)  7.21
E)  9.88

Question 13

Define the boiling point of a liquid.

Accepted Answer

The temperature at w...

Question 14

Which of the following compounds exhibits hydrogen bonding?

Accepted Answer

A)  CH3I
B)  H2
C)  C6H5OC
D)  CH3CH

Question 15

Why does the temperature of a substance stay constant during a phase change such as vaporization?

Accepted Answer

The energy added to the substance is not...

Question 16

How much energy must be removed from a 94.4 g sample of benzene (molar mass = 78.11 g mol-1) at 322.0 K to solidify the sample and lower the temperature to 205.0 K? The following physical data may be useful: ΔvapH = 33.9 kJ mol-1
ΔfusH = 9.8 kJ mol-1
Cliq = 1.73 J g-1 °C-1
Cgas = 1.06 J g-1 °C-1
Csol = 1.51 J g-1 °C-1
Tmelting = 279.0 K
Tboiling = 353.0 K

Accepted Answer

A)  17.6 kJ
B)  11.8 kJ
C)  70.2 kJ
D)  10.5 kJ
E)  29.4 kJ

Question 17

The boiling point of water is ________.

Accepted Answer

A)  0 °C
B)  32 °C
C)  212 °C
D)  100 °C
E)  273 °C

Question 18

Sketch the phase diagram of benzene. Make sure to label the axes and the different phases of benzene. Use the physical data provided below.
melting point = 279 K
boiling point = 353 K
Tc = 562 K
Pc = 49.0 bar
Triple point = 0.05 bar, 279 K

Accepted Answer

Sketch should includ...

Question 19

Give the edge length in terms of r for a simple cubic cell.

Accepted Answer

The answer of Give the edge length in terms of...

Question 20

Gold crystallizes in a face-centred cubic structure. What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Accepted Answer

A)  204 pm
B)  288 pm
C)  333 pm
D)  407 pm

Exam 11: Liquids, Solids, and Intermolecular Forces

Define deposition.

Correct Answer
verified

Why does the temperature of a substance stay constant during a phase change such as vaporization?

Correct Answer
verified
The energy added to the substance is not...
View Answer

Define the boiling point of a liquid.

Correct Answer
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The temperature at w...
View Answer

Place the following compounds in order of increasing strength of intermolecular forces. CO₂ F₂ NH₂CH₃

Correct Answer
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Sketch the phase diagram of benzene. Make sure to label the axes and the different phases of benzene. Use the physical data provided below. melting point = 279 K boiling point = 353 K T_c = 562 K P_c = 49.0 bar Triple point = 0.05 bar, 279 K

Correct Answer
verified
Sketch should includ...
View Answer

Consider the phase diagram shown. Choose the statement below that is TRUE.

Correct Answer
verified

Correct Answer
verified

Match the following. -LiI + H₂O

Correct Answer
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Place the following substances in order of decreasing vapour pressure at a given temperature. PF₅ BrF₃ CF₄

Correct Answer
verified

The enthalpy change for converting 10.0 g of ice at -25.0 °C to water at 80.0 °C is ________ kJ. The specific heats of ice, water, and steam are 2.09 J g^-1 °C^-1, 4.18 J g^-1 °C^-1, and 1.84 J g^-1 °C^-1, respectively. For H₂O, Δ_fusH = 6.01 kJ mol^-1, and Δ_vapH = 40.67 kJ mol^-1.

Correct Answer
verified

Which of the following compounds exhibits hydrogen bonding?

Correct Answer
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Which of the following is considered an atomic solid?

Correct Answer
verified

Gold crystallizes in a face-centred cubic structure. What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Correct Answer
verified

Which of the following statements is TRUE?

Correct Answer
verified

The energy required to increase the surface area of a liquid by a unit amount is called ________.

Correct Answer
verified

Define viscosity.

Correct Answer
verified
Viscosity ...
View Answer

The boiling point of water is ________.

Correct Answer
verified

Give the edge length in terms of r for a simple cubic cell.

Correct Answer
verified

Describe the difference between the conduction band and the valence band.

Correct Answer
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The valence band is the group of highest...
View Answer

Correct Answer
verified

Exam 11: Liquids, Solids, and Intermolecular Forces

Define deposition.

Correct AnswerverifiedShow Answer

Why does the temperature of a substance stay constant during a phase change such as vaporization?

Correct AnswerverifiedThe energy added to the substance is not...View AnswerShow Answer

Define the boiling point of a liquid.

Correct AnswerverifiedThe temperature at w...View AnswerShow Answer

Place the following compounds in order of increasing strength of intermolecular forces. CO2 F2 NH2CH3

Correct AnswerverifiedShow Answer

Sketch the phase diagram of benzene. Make sure to label the axes and the different phases of benzene. Use the physical data provided below. melting point = 279 K boiling point = 353 K Tc = 562 K Pc = 49.0 bar Triple point = 0.05 bar, 279 K

Correct AnswerverifiedSketch should includ...View AnswerShow Answer

Consider the phase diagram shown. Choose the statement below that is TRUE.

Correct AnswerverifiedShow Answer

How much energy is required to heat 87.1 g acetone (molar mass = 58.08 g mol-1) from a solid at -154.0 °C to a liquid at -42. 0°C? The following physical data may be useful: ΔfusH = 7.27 kJ mol-1 Cliq = 2.16 J g-1 °C-1 Cgas = 1.29 J g-1 °C-1 Csol = 1.65 J g-1 °C-1 Tmelting = -95.0 °C

Correct AnswerverifiedShow Answer

Match the following. -LiI + H2O

Correct AnswerverifiedShow Answer

Place the following substances in order of decreasing vapour pressure at a given temperature. PF5 BrF3 CF4

Correct AnswerverifiedShow Answer

The enthalpy change for converting 10.0 g of ice at -25.0 °C to water at 80.0 °C is ________ kJ. The specific heats of ice, water, and steam are 2.09 J g-1 °C-1, 4.18 J g-1 °C-1, and 1.84 J g-1 °C-1, respectively. For H2O, ΔfusH = 6.01 kJ mol-1, and ΔvapH = 40.67 kJ mol-1.

Correct AnswerverifiedShow Answer

Which of the following compounds exhibits hydrogen bonding?

Correct AnswerverifiedShow Answer

Which of the following is considered an atomic solid?

Correct AnswerverifiedShow Answer

Gold crystallizes in a face-centred cubic structure. What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Correct AnswerverifiedShow Answer

Which of the following statements is TRUE?

Correct AnswerverifiedShow Answer

The energy required to increase the surface area of a liquid by a unit amount is called ________.

Correct AnswerverifiedShow Answer

Define viscosity.

Correct AnswerverifiedViscosity ...View AnswerShow Answer

The boiling point of water is ________.

Correct AnswerverifiedShow Answer

Give the edge length in terms of r for a simple cubic cell.

Correct AnswerverifiedShow Answer

Describe the difference between the conduction band and the valence band.

Correct AnswerverifiedThe valence band is the group of highest...View AnswerShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
The energy added to the substance is not...
View Answer

Correct Answer
verified
The temperature at w...
View Answer

Place the following compounds in order of increasing strength of intermolecular forces. CO₂ F₂ NH₂CH₃

Correct Answer
verified

Sketch the phase diagram of benzene. Make sure to label the axes and the different phases of benzene. Use the physical data provided below. melting point = 279 K boiling point = 353 K T_c = 562 K P_c = 49.0 bar Triple point = 0.05 bar, 279 K

Correct Answer
verified
Sketch should includ...
View Answer

Correct Answer
verified

Correct Answer
verified

Match the following. -LiI + H₂O

Correct Answer
verified

Place the following substances in order of decreasing vapour pressure at a given temperature. PF₅ BrF₃ CF₄

Correct Answer
verified

The enthalpy change for converting 10.0 g of ice at -25.0 °C to water at 80.0 °C is ________ kJ. The specific heats of ice, water, and steam are 2.09 J g^-1 °C^-1, 4.18 J g^-1 °C^-1, and 1.84 J g^-1 °C^-1, respectively. For H₂O, Δ_fusH = 6.01 kJ mol^-1, and Δ_vapH = 40.67 kJ mol^-1.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Viscosity ...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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The valence band is the group of highest...
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Correct Answer
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