Question 1

Which of the following is not an endothermic process?

Accepted Answer

A)  melting of a solid
B)  vaporization
C)  raising the temperature of a gas
D)  condensation of water vapor
E)  sublimation of dry iceF) None of the above
G) A) and B)

Question 2

The freezing point of a liquid does not change as the atmospheric pressure changes.

Accepted Answer

A) True 
 B)False

Question 3

The normal boiling point of methanol (CH3OH) is 64.6°C. Given that the vapor pressure of methanol is 75.0 torr at 15.2°C, calculate the molar enthalpy of vaporization of methanol.

Accepted Answer

A)  0.383 kJ/mol
B)  3.00 kJ/mol
C)  38.0 kJ/mol
D)  27.5 kJ/mol
E)  74.7 kJ/molF) A) and B)
G) B) and D)

Question 4

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm3 at 27°C. Calculate the atomic radius of Pd.

Accepted Answer

A)  138 pm
B)  1.95 * 10-8 nm
C)  1.95 * 10-8 cm
D)  154 pm
E)  0.109 nmF) A) and B)
G) None of the above

Question 5

Which liquid is expected to have the larger surface tension at a given temperature, CCl4 or H2O? Briefly explain.

Accepted Answer

Water would have the...

Question 6

Indicate all the types of intermolecular forces of attraction in CH2O(g).

Accepted Answer

dipole-dip...

Question 7

How much enthalpy is necessary to heat 10.0 g of solid benzene (C6H6)at 0.0°C to benzene vapor at 100°C?

Accepted Answer

Question 8

Osmium tetroxide, OsO4, is a soft crystal that melts at 40°C. The liquid does not conduct electricity. What kind of crystal is this?

Accepted Answer

Question 9

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction?
SF4 or C10H22

Accepted Answer

Question 10

Solid iodine has a vapor pressure of 1.0 mmHg at 39°C. How many moles of iodine will sublime into a 500. mL flask at this temperature? If the volume of the flask is doubled at constant temperature, what will happen to the equilibrium vapor pressure of I2? (Assume some solid I2 is always present in the container.)

Accepted Answer

A)  2.1 * 10-4 mol; vapor pressure increases
B)  2.0 * 10-2 mol; vapor pressure increases
C)  2.6 * 10-5 mol; no change in vapor pressure
D)  2.1 * 10-4 mol; no change in vapor pressure
E)  2.6* 10-5 mol; vapor pressure decreasesF) D) and E)
G) B) and D)

Question 11

Identify the dominant (strongest)type of intermolecular force present in H2S(g).

Accepted Answer

Question 12

The shape of the water-to-glass meniscus results from the strong adhesive forces between glass and water.

Accepted Answer

A) True 
 B)False

Question 13

Based on the phase diagram shown below, which is more dense: the liquid phase or the solid phase?

Accepted Answer

the solid ...

Question 14

Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H2O or KI (II) HF or HI (III) Cl2 or Br2

Accepted Answer

A)  H2O, HF, and Cl2
B)  KI, HF, and Br2
C)  KI, HI, and Br2
D)  H2O, HI, and Cl2
E)  KI, HF, and Cl2F) A) and E)
G) B) and D)

Question 15

Which of the responses includes all of the following that can form hydrogen bonds with water molecules? (1) Na+ (2) CH3COOH (3) C2H6 (4) CH3NH2

Accepted Answer

A)  (1) and (2) 
B)  (1) and (3) 
C)  (2) and (3) 
D)  (2) and (4) 
E)  (3) and (4) F) All of the above
G) B) and D)

Question 16

Given the following compound and its boiling point, identify whether it is polar or nonpolar: H2S, -60.7°C.

Accepted Answer

Question 17

Which of the following characteristics indicates the presence of weak intermolecular forces in a liquid?

Accepted Answer

A)  a low heat of vaporization
B)  a high critical temperature
C)  a low vapor pressure
D)  a high boiling point
E)  None of the above.F) A) and B)
G) B) and D)

Question 18

Which one of the following substances will have both dispersion forces and dipole-dipole forces?

Accepted Answer

A)  HCl
B)  BCl3
C)  Br2
D)  H2
E)  CO2F) B) and C)
G) B) and E)

Question 19

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction?
H2S or H2Se

Accepted Answer

Question 20

Helium atoms do not combine to form He2 molecules, yet He atoms do attract one another weakly through

Accepted Answer

A)  dipole-dipole forces.
B)  ion-dipole forces.
C)  dispersion forces.
D)  dipole-induced dipole forces.
E)  hydrogen bonding.F) None of the above
G) A) and E)

Exam 12: Intermolecular Forces and Liquids and Solids

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm³ at 27°C. Calculate the atomic radius of Pd.

Correct Answer
verified

How much enthalpy is necessary to heat 10.0 g of solid benzene (C₆H₆)at 0.0°C to benzene vapor at 100°C?

Correct Answer
verified

The freezing point of a liquid does not change as the atmospheric pressure changes.

Correct Answer
verified

Osmium tetroxide, OsO₄, is a soft crystal that melts at 40°C. The liquid does not conduct electricity. What kind of crystal is this?

Correct Answer
verified

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? H₂S or H₂Se

Correct Answer
verified

Identify the dominant (strongest)type of intermolecular force present in H₂S(g).

Correct Answer
verified

Which of the following characteristics indicates the presence of weak intermolecular forces in a liquid?

Correct Answer
verified

Which of the following is not an endothermic process?

Correct Answer
verified

Indicate all the types of intermolecular forces of attraction in CH₂O(g).

Correct Answer
verified
dipole-dip...
View Answer

Which of the responses includes all of the following that can form hydrogen bonds with water molecules? (1) Na⁺ (2) CH₃COOH (3) C₂H₆ (4) CH₃NH₂

Correct Answer
verified

The normal boiling point of methanol (CH₃OH) is 64.6°C. Given that the vapor pressure of methanol is 75.0 torr at 15.2°C, calculate the molar enthalpy of vaporization of methanol.

Correct Answer
verified

Which one of the following substances will have both dispersion forces and dipole-dipole forces?

Correct Answer
verified

The shape of the water-to-glass meniscus results from the strong adhesive forces between glass and water.

Correct Answer
verified

Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H₂O or KI (II) HF or HI (III) Cl₂ or Br₂

Correct Answer
verified

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? SF₄ or C₁₀H₂₂

Correct Answer
verified

Correct Answer
verified

Which liquid is expected to have the larger surface tension at a given temperature, CCl₄ or H₂O? Briefly explain.

Correct Answer
verified
Water would have the...
View Answer

Helium atoms do not combine to form He₂ molecules, yet He atoms do attract one another weakly through

Correct Answer
verified

Based on the phase diagram shown below, which is more dense: the liquid phase or the solid phase?

Correct Answer
verified
the solid ...
View Answer

Given the following compound and its boiling point, identify whether it is polar or nonpolar: H₂S, -60.7°C.

Correct Answer
verified

Exam 12: Intermolecular Forces and Liquids and Solids

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm3 at 27°C. Calculate the atomic radius of Pd.

Correct AnswerverifiedShow Answer

How much enthalpy is necessary to heat 10.0 g of solid benzene (C6H6)at 0.0°C to benzene vapor at 100°C?

Correct AnswerverifiedShow Answer

The freezing point of a liquid does not change as the atmospheric pressure changes.

Correct AnswerverifiedShow Answer

Osmium tetroxide, OsO4, is a soft crystal that melts at 40°C. The liquid does not conduct electricity. What kind of crystal is this?

Correct AnswerverifiedShow Answer

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? H2S or H2Se

Correct AnswerverifiedShow Answer

Identify the dominant (strongest)type of intermolecular force present in H2S(g).

Correct AnswerverifiedShow Answer

Which of the following characteristics indicates the presence of weak intermolecular forces in a liquid?

Correct AnswerverifiedShow Answer

Which of the following is not an endothermic process?

Correct AnswerverifiedShow Answer

Indicate all the types of intermolecular forces of attraction in CH2O(g).

Correct Answerverifieddipole-dip...View AnswerShow Answer

Which of the responses includes all of the following that can form hydrogen bonds with water molecules? (1) Na+ (2) CH3COOH (3) C2H6 (4) CH3NH2

Correct AnswerverifiedShow Answer

The normal boiling point of methanol (CH3OH) is 64.6°C. Given that the vapor pressure of methanol is 75.0 torr at 15.2°C, calculate the molar enthalpy of vaporization of methanol.

Correct AnswerverifiedShow Answer

Which one of the following substances will have both dispersion forces and dipole-dipole forces?

Correct AnswerverifiedShow Answer

The shape of the water-to-glass meniscus results from the strong adhesive forces between glass and water.

Correct AnswerverifiedShow Answer

Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H2O or KI (II) HF or HI (III) Cl2 or Br2

Correct AnswerverifiedShow Answer

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? SF4 or C10H22

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which liquid is expected to have the larger surface tension at a given temperature, CCl4 or H2O? Briefly explain.

Correct AnswerverifiedWater would have the...View AnswerShow Answer

Helium atoms do not combine to form He2 molecules, yet He atoms do attract one another weakly through

Correct AnswerverifiedShow Answer

Based on the phase diagram shown below, which is more dense: the liquid phase or the solid phase?

Correct Answerverifiedthe solid ...View AnswerShow Answer

Given the following compound and its boiling point, identify whether it is polar or nonpolar: H2S, -60.7°C.

Correct AnswerverifiedShow Answer

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm³ at 27°C. Calculate the atomic radius of Pd.

Correct Answer
verified

How much enthalpy is necessary to heat 10.0 g of solid benzene (C₆H₆)at 0.0°C to benzene vapor at 100°C?

Correct Answer
verified

Correct Answer
verified

Osmium tetroxide, OsO₄, is a soft crystal that melts at 40°C. The liquid does not conduct electricity. What kind of crystal is this?

Correct Answer
verified

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? H₂S or H₂Se

Correct Answer
verified

Identify the dominant (strongest)type of intermolecular force present in H₂S(g).

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Indicate all the types of intermolecular forces of attraction in CH₂O(g).

Correct Answer
verified
dipole-dip...
View Answer

Which of the responses includes all of the following that can form hydrogen bonds with water molecules? (1) Na⁺ (2) CH₃COOH (3) C₂H₆ (4) CH₃NH₂

Correct Answer
verified

The normal boiling point of methanol (CH₃OH) is 64.6°C. Given that the vapor pressure of methanol is 75.0 torr at 15.2°C, calculate the molar enthalpy of vaporization of methanol.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Choose the response that lists the member of each of the following pairs that has the higher boiling point. (I) H₂O or KI (II) HF or HI (III) Cl₂ or Br₂

Correct Answer
verified

Of the pair of compounds given, which would have the stronger intermolecular forces of attraction? SF₄ or C₁₀H₂₂

Correct Answer
verified

Correct Answer
verified

Which liquid is expected to have the larger surface tension at a given temperature, CCl₄ or H₂O? Briefly explain.

Correct Answer
verified
Water would have the...
View Answer

Helium atoms do not combine to form He₂ molecules, yet He atoms do attract one another weakly through

Correct Answer
verified

Correct Answer
verified
the solid ...
View Answer

Given the following compound and its boiling point, identify whether it is polar or nonpolar: H₂S, -60.7°C.

Correct Answer
verified