Question 1

Which intermolecular force or bond is responsible for the density of H2O(s) being less than that of H2O( 2O(s) being less than that of H2O(   ) ? A)  London dispersion forces B)  hydrogen bonding C)  ionic bonding D)  covalent bonding E)  dipole/induced dipole forces" class="answers-bank-image d-inline" rel="preload" > ) ?

Accepted Answer

A)   London dispersion forces
B)   hydrogen bonding
C)   ionic bonding
D)   covalent bonding
E)   dipole/induced dipole forcesF) C) and E)
G) C) and D)

Question 2

Which of the following molecules has the lowest boiling point?

Accepted Answer

A)   CH4
B)   CHCl3
C)   CH2Cl2
D)   CH3Cl
E)   CCl4F) D) and E)
G) B) and D)

Question 3

Hydrogen bonding is present in all of the following molecular solids EXCEPT ____.

Accepted Answer

A)   H2SO4 (dihydrogen sulfate) 
B)   CH3OH (methanol) 
C)   CH3OCH3 (dimethyl ether) 
D)   HF (hydrogen fluoride) 
E)   CH3CO2H (acetic acid) F) B) and E)
G) A) and B)

Question 4

Which of the following is not a characteristic of volatile liquids?

Accepted Answer

A)   Volatile liquids are easily vaporized.
B)   Volatile liquids have relatively high vapor pressures.
C)   Volatile liquids have strong cohesive forces.
D)   Volatile liquids have weak intermolecular forces.
E)   All of theseF) A) and D)
G) C) and E)

Question 5

The vapor pressure of a given liquid will increase if

Accepted Answer

A)   the liquid is moved to a container in which its surface area is very much larger.
B)   the volume of the liquid is increased.
C)   the temperature is increased.
D)   the volume of the vapor phase is increased.
E)   a more volatile liquid is added to the given liquid.F) C) and D)
G) None of the above

Question 6

Which of the following statements best describes what happens when a small amount of solid potassium chloride is dissolved in water?

Accepted Answer

A)   The heat from the warm water melts the solid,making it a liquid.
B)   Nothing happens,because potassium chloride is insoluble in water.
C)   The solid KCl breaks apart into separate K and Cl atoms by interacting with the water molecules.
D)   The water molecules surround each ion in the solid KCl,separating the K ions from the Cl ions.
E)   The solid undergoes a chemical change by reacting with the water.F) A) and B)
G) A) and E)

Question 7

Which of the following strong electrolytes has the most negative hydration enthalpy?

Accepted Answer

A)   NaCl
B)   KCl
C)   RbCl
D)   CsCl
E)   HClF) B) and E)
G) C) and E)

Question 8

Which of the following intermolecular forces or bonds is primarily responsible for the solubility of argon (Ar) in water?

Accepted Answer

A)   Dipole-dipole force
B)   Hydrogen bonding
C)   Dipole-induced dipole force
D)   Hydrogen bonding-dipole force
E)   Ion-induced dipole forceF) B) and E)
G) A) and B)

Question 9

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC2H3O2).

Accepted Answer

Question 10

________ is a measure of the degree to which the electron cloud surrounding an atom or molecule can be distorted in an electric field.

Accepted Answer

The answer of ________ is a measure of the degree...

Question 11

Which of the following molecules has the highest enthalpy of vaporization?

Accepted Answer

A)   N2
B)   O2
C)   I2
D)   CH4
E)   C6H6F) D) and E)
G) A) and E)

Question 12

Arrange HF,HCl,and HBr in increasing order of their boiling point.

Accepted Answer

A)   HF 
B)   HF 
C)   HBr 
D)   HBr 
E)   HCl < HBr < HFF) C) and D)
G) B) and E)

Question 13

Capillary action is ____

Accepted Answer

A)   resistance to flow.
B)   the rate of collisions for gas molecules.
C)   the energy required to overcome the attractive forces between molecules in the liquid state to form a gas.
D)   the force required to expand the surface of a liquid.
E)   the drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces.F) A) and D)
G) A) and B)

Question 14

Which of the following nonpolar molecules has the highest boiling point?

Accepted Answer

A)   N2
B)   C2H4
C)   F2
D)   O2
E)   CS2F) B) and E)
G) A) and D)

Question 15

Which one of the following molecules will exhibit dipole-dipole intermolecular forces as a pure liquid or solid?

Accepted Answer

A)   CSe2
B)   C2H2
C)   SiF4
D)   O2
E)   PF3F) C) and E)
G) A) and B)

Question 16

Which of the following compounds has a boiling point closest to that of argon?

Accepted Answer

A)   F2
B)   Cl2
C)   HCl
D)   NaF
E)   HFF) A) and B)
G) B) and D)

Question 17

At 80.0 °C,water has an equilibrium vapor pressure of 355.1 mm Hg.If 4.22 g H2O is sealed in an evacuated 5.00 L flask and heated to 80.0 °C,what mass of H2O will be found in the gas phase when liquid-vapor equilibrium is established? Assume any liquid remaining in the flask has a negligible volume.(R = 0.08206 L⋅atm/mol⋅K,1 atm = 760 mm Hg)

Accepted Answer

A)   0.689 g
B)   1.45 g
C)   1.67 g
D)   2.77 g
E)   4.22 gF) None of the above
G) A) and B)

Question 18

Normal boiling point is defined as

Accepted Answer

A)   the temperature at which the vapor pressure of a liquid equals 1 atm.
B)   the pressure at which any liquid boils at 373.15 K.
C)   the temperature at which water boils in a vacuum.
D)   the temperature at which the liquid and gaseous phases of a substance have equal densities.
E)   the temperature at which the enthalpy of vaporization equals 100.0 kJ/mol.F) A) and C)
G) B) and E)

Question 19

Ammonia (NH3) is used as a refrigerant.At its boiling point of -33 °C,the standard enthalpy of vaporization of ammonia is 23.3 kJ/mol.How much heat is released when 50.0 g of ammonia is condensed at -33 °C?

Accepted Answer

A)   -0.466 kJ
B)   -7.94 kJ
C)   -36.6 × 103 kJ
D)   -68.4 kJ
E)   -1.17 × 103 kJF) C) and E)
G) None of the above

Question 20

Arrange H2S,H2Se,and H2Te in order from lowest to highest boiling point.

Accepted Answer

A)   H2Te 2Se 2S
B)   H2S 2Se 2Te
C)   H2S 2Te 2Se
D)   H2Se 2Te 2S
E)   H2Te 2S 2SeF) None of the above
G) A) and D)

Exam 12: Intermolecular Forces and Liquids

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC₂H₃O₂).

Correct Answer
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Arrange H₂S,H₂Se,and H₂Te in order from lowest to highest boiling point.

Correct Answer
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Which of the following molecules has the lowest boiling point?

Correct Answer
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Correct Answer
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Capillary action is ____

Correct Answer
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Which of the following statements best describes what happens when a small amount of solid potassium chloride is dissolved in water?

Correct Answer
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________ is a measure of the degree to which the electron cloud surrounding an atom or molecule can be distorted in an electric field.

Correct Answer
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Ammonia (NH₃) is used as a refrigerant.At its boiling point of -33 °C,the standard enthalpy of vaporization of ammonia is 23.3 kJ/mol.How much heat is released when 50.0 g of ammonia is condensed at -33 °C?

Correct Answer
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Normal boiling point is defined as

Correct Answer
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Which of the following is not a characteristic of volatile liquids?

Correct Answer
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Arrange HF,HCl,and HBr in increasing order of their boiling point.

Correct Answer
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Which of the following molecules has the highest enthalpy of vaporization?

Correct Answer
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Which one of the following molecules will exhibit dipole-dipole intermolecular forces as a pure liquid or solid?

Correct Answer
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Which of the following intermolecular forces or bonds is primarily responsible for the solubility of argon (Ar) in water?

Correct Answer
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Which of the following nonpolar molecules has the highest boiling point?

Correct Answer
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Hydrogen bonding is present in all of the following molecular solids EXCEPT ____.

Correct Answer
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Which intermolecular force or bond is responsible for the density of H₂O(s) being less than that of H₂O( ) ?

Correct Answer
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Which of the following compounds has a boiling point closest to that of argon?

Correct Answer
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The vapor pressure of a given liquid will increase if

Correct Answer
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Which of the following strong electrolytes has the most negative hydration enthalpy?

Correct Answer
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Exam 12: Intermolecular Forces and Liquids

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC2H3O2).

Correct AnswerverifiedShow Answer

Arrange H2S,H2Se,and H2Te in order from lowest to highest boiling point.

Correct AnswerverifiedShow Answer

Which of the following molecules has the lowest boiling point?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Capillary action is ____

Correct AnswerverifiedShow Answer

Which of the following statements best describes what happens when a small amount of solid potassium chloride is dissolved in water?

Correct AnswerverifiedShow Answer

________ is a measure of the degree to which the electron cloud surrounding an atom or molecule can be distorted in an electric field.

Correct AnswerverifiedShow Answer

Ammonia (NH3) is used as a refrigerant.At its boiling point of -33 °C,the standard enthalpy of vaporization of ammonia is 23.3 kJ/mol.How much heat is released when 50.0 g of ammonia is condensed at -33 °C?

Correct AnswerverifiedShow Answer

Normal boiling point is defined as

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of volatile liquids?

Correct AnswerverifiedShow Answer

Arrange HF,HCl,and HBr in increasing order of their boiling point.

Correct AnswerverifiedShow Answer

Which of the following molecules has the highest enthalpy of vaporization?

Correct AnswerverifiedShow Answer

Which one of the following molecules will exhibit dipole-dipole intermolecular forces as a pure liquid or solid?

Correct AnswerverifiedShow Answer

Which of the following intermolecular forces or bonds is primarily responsible for the solubility of argon (Ar) in water?

Correct AnswerverifiedShow Answer

Which of the following nonpolar molecules has the highest boiling point?

Correct AnswerverifiedShow Answer

Hydrogen bonding is present in all of the following molecular solids EXCEPT ____.

Correct AnswerverifiedShow Answer

Which intermolecular force or bond is responsible for the density of H2O(s) being less than that of H2O( ) ?

Correct AnswerverifiedShow Answer

Which of the following compounds has a boiling point closest to that of argon?

Correct AnswerverifiedShow Answer

The vapor pressure of a given liquid will increase if

Correct AnswerverifiedShow Answer

Which of the following strong electrolytes has the most negative hydration enthalpy?

Correct AnswerverifiedShow Answer

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC₂H₃O₂).

Correct Answer
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Arrange H₂S,H₂Se,and H₂Te in order from lowest to highest boiling point.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Ammonia (NH₃) is used as a refrigerant.At its boiling point of -33 °C,the standard enthalpy of vaporization of ammonia is 23.3 kJ/mol.How much heat is released when 50.0 g of ammonia is condensed at -33 °C?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Which intermolecular force or bond is responsible for the density of H₂O(s) being less than that of H₂O( ) ?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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