Question 1

The temperature at which the vapor pressure of a liquid equals the external pressure is called the ________.

Accepted Answer

A) boiling point 
B) critical point 
C) melting point 
D) sublimation point 
E) thermal point 
A) boiling point 
B) critical point 
C) melting point 
D) sublimation point 
E) thermal point A

Question 2

Choose the INCORRECT statement.

Accepted Answer

A) In a network covalent solid,covalent bonds extend throughout the crystalline solid. 
B) Diamond has sp3 hybridization. 
C) Graphite has sp hybridization. 
D) Fullerenes are a recently discovered allotropic form of carbons. 
E) Nanotubes are an allotropic form of carbon. 
A) In a network covalent solid,covalent bonds extend throughout the crystalline solid. 
B) Diamond has sp3 hybridization. 
C) Graphite has sp hybridization. 
D) Fullerenes are a recently discovered allotropic form of carbons. 
E) Nanotubes are an allotropic form of carbon. C

Question 3

Arrange the following compounds in order of increasing boiling point: 
HCl,HBr,HI.

Accepted Answer

A) HCl,HBr,HI 
B) HBr,HI,HCl 
C) HI,HBr,HCl 
D) HCl,HI,HBr 
E) HI,HCl,HBr 
A) HCl,HBr,HI 
B) HBr,HI,HCl 
C) HI,HBr,HCl 
D) HCl,HI,HBr 
E) HI,HCl,HBr A

Question 4

The heat of deposition equals the negative of the heat of ________.

Accepted Answer

A) fusion 
B) condensation 
C) sublimation 
D) solidification 
E) reposition 
A) fusion 
B) condensation 
C) sublimation 
D) solidification 
E) reposition

Question 5

When a liquid is in equilibrium with its vapor in a closed container:

Accepted Answer

A) the rate at which molecules from the liquid phase enter the gas phase exactly equals the rate at which molecules from the gas phase pass into the liquid phase 
B) a change in temperature will not change the pressure in the container 
C) the amount of gas in the container must exactly equal the amount of liquid 
D) molecules cannot go from the liquid phase to the gas phase because the amount of liquid in the container is constant 
E) the vapor will gradually change back to the liquid state,that is,no vapor will be left 
A) the rate at which molecules from the liquid phase enter the gas phase exactly equals the rate at which molecules from the gas phase pass into the liquid phase 
B) a change in temperature will not change the pressure in the container 
C) the amount of gas in the container must exactly equal the amount of liquid 
D) molecules cannot go from the liquid phase to the gas phase because the amount of liquid in the container is constant 
E) the vapor will gradually change back to the liquid state,that is,no vapor will be left

Question 6

Which of the following compounds has the highest boiling point?

Accepted Answer

A) H2O 
B) HI 
C) Sb H3 
D) SnH4 
A) H2O 
B) HI 
C) Sb H3 
D) SnH4

Question 7

Nickel has a face-centred cubic structure and has a density of 8.90 g cm-3.What is its atomic radius?

Accepted Answer

A) 125 pm 
B) 249 pm 
C) 353 pm 
D) 997 pm 
A) 125 pm 
B) 249 pm 
C) 353 pm 
D) 997 pm

Question 8

Van der Waals forces are a type of London force.

Accepted Answer

A) True 
 B)False

Question 9

Based on the figure above,the boiling point of ethyl alcohol under an external pressure of 0.0742 bar Is approximately

Accepted Answer

A) 80 
B) 60 
C) 70 
D) 40 
E) 20 
A) 80 
B) 60 
C) 70 
D) 40 
E) 20

Question 10

NaCl crystallizes in a cubic unit cell with Cl- ions on each corner and each face.How many Na+ and Cl- ions are in each unit cell of NaCl?

Accepted Answer

A) 1 Na+ ion and 1 Cl- ion 
B) 2 Na+ ions and 2 Cl- ions 
C) 4 Na+ ions and 4 Cl- ions 
D) 8 Na+ ions and 8 Cl- ions 
A) 1 Na+ ion and 1 Cl- ion 
B) 2 Na+ ions and 2 Cl- ions 
C) 4 Na+ ions and 4 Cl- ions 
D) 8 Na+ ions and 8 Cl- ions

Question 11

The triple point of H2O is at 4.58 mmHg and +0.01 °C.Some H2O at -50 °C is heated to 120 °C at a constant pressure of 0.5 atm.The changes of state occurring in this process are:

Accepted Answer

A) solid to gas 
B) solid to liquid to gas 
C) liquid to gas 
D) solid to liquid 
E) gas to liquid to solid 
A) solid to gas 
B) solid to liquid to gas 
C) liquid to gas 
D) solid to liquid 
E) gas to liquid to solid

Question 12

Surface tension of a liquid is the work or energy required to increase the surface area of a liquid.

Accepted Answer

A) True 
 B)False

Question 13

If 34 g of a solid with a molar mass = 174 g/mol requires 21.3 kJ to melt it,what is the molar heat of fusion in kJ/mol?

Accepted Answer

A) (21.3)(174)(34)kJ/mol 
B) (21.3/174)(34)kJ/mol 
C) (21.3/174)/34 kJ/mol 
D) (21.3)(174/34)kJ/mol 
E) (34/21.3)(174)kJ/mol 
A) (21.3)(174)(34)kJ/mol 
B) (21.3/174)(34)kJ/mol 
C) (21.3/174)/34 kJ/mol 
D) (21.3)(174/34)kJ/mol 
E) (34/21.3)(174)kJ/mol

Question 14

Arrange in order by decreasing boiling point:
CH3CH2OH,HOCH2CH2OH,C4H10

Accepted Answer

A) HOCH2CH2OH,CH3CH2OH,C4H10  
B) C4H10,HOCH2CH2OH,CH3CH2OH 
C) HOCH2CH2OH,C4H10,CH3CH2OH 
D) C4H10,CH3CH2OH,HOCH2CH2OH 
E) CH3CH2OH,C4H10,HOCH2CH2OH 
A) HOCH2CH2OH,CH3CH2OH,C4H10  
B) C4H10,HOCH2CH2OH,CH3CH2OH 
C) HOCH2CH2OH,C4H10,CH3CH2OH 
D) C4H10,CH3CH2OH,HOCH2CH2OH 
E) CH3CH2OH,C4H10,HOCH2CH2OH

Question 15

A liquid has a normal boiling point of 78 °C and its vapor pressure is 400 mmHg at 50 °C.To compute the molar heat of vaporization,one needs:

Accepted Answer

A) the mole weight 
B) the vapor pressure at another temperature 
C) the specific heat 
D) molarity 
E) all information has been provided 
A) the mole weight 
B) the vapor pressure at another temperature 
C) the specific heat 
D) molarity 
E) all information has been provided

Question 16

Given the following information,calculate ΔH° (in kcal mol-1)for: I(g)+ e- → I-(g)

Accepted Answer

A) -715 kcal mol-1 
B) -338 kcal mol-1 
C) -89 kcal mol-1 
D) -71 kcal mol-1 
E) -142 kcal mol-1 
A) -715 kcal mol-1 
B) -338 kcal mol-1 
C) -89 kcal mol-1 
D) -71 kcal mol-1 
E) -142 kcal mol-1

Question 17

Find a FALSE statement about X-rays.

Accepted Answer

A) diffracted by crystals 
B) radiation of wavelength approximating 1 angstrom 
C) visible to the naked eye 
D) used to determine the structure of molecules 
E) produced using high-energy electrons 
A) diffracted by crystals 
B) radiation of wavelength approximating 1 angstrom 
C) visible to the naked eye 
D) used to determine the structure of molecules 
E) produced using high-energy electrons

Question 18

A passage of substance directly from the vapor to the solid state is known as:

Accepted Answer

A) deposition 
B) decomposition 
C) sublimation 
D) solidification 
E) fusion 
A) deposition 
B) decomposition 
C) sublimation 
D) solidification 
E) fusion

Question 19

An arrangement in which every other layer is identical (ABABABAB)is ________.

Accepted Answer

A) octahedral holes 
B) tetrahedral holes 
C) hexagonal close packed 
D) cubic close packing 
E) cubic face centered 
A) octahedral holes 
B) tetrahedral holes 
C) hexagonal close packed 
D) cubic close packing 
E) cubic face centered

Question 20

Below are given the Lewis structures of five molecules.Which one displays the MOST hydrogen bonding?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Exam 12: Intermolecular Forces: Liquids and Solids

The temperature at which the vapor pressure of a liquid equals the external pressure is called the ________.

Choose the INCORRECT statement.

Arrange the following compounds in order of increasing boiling point: HCl,HBr,HI.

The heat of deposition equals the negative of the heat of ________.

When a liquid is in equilibrium with its vapor in a closed container:

Which of the following compounds has the highest boiling point?

Nickel has a face-centred cubic structure and has a density of 8.90 g cm-3.What is its atomic radius?

Van der Waals forces are a type of London force.

Based on the figure above,the boiling point of ethyl alcohol under an external pressure of 0.0742 bar Is approximately

NaCl crystallizes in a cubic unit cell with Cl- ions on each corner and each face.How many Na+ and Cl- ions are in each unit cell of NaCl?

The triple point of H2O is at 4.58 mmHg and +0.01 °C.Some H2O at -50 °C is heated to 120 °C at a constant pressure of 0.5 atm.The changes of state occurring in this process are:

Surface tension of a liquid is the work or energy required to increase the surface area of a liquid.

If 34 g of a solid with a molar mass = 174 g/mol requires 21.3 kJ to melt it,what is the molar heat of fusion in kJ/mol?

Arrange in order by decreasing boiling point: CH3CH2OH,HOCH2CH2OH,C4H10

A liquid has a normal boiling point of 78 °C and its vapor pressure is 400 mmHg at 50 °C.To compute the molar heat of vaporization,one needs:

Given the following information,calculate ΔH° (in kcal mol-1)for: I(g)+ e- → I-(g)

Find a FALSE statement about X-rays.

A passage of substance directly from the vapor to the solid state is known as:

An arrangement in which every other layer is identical (ABABABAB)is ________.

Below are given the Lewis structures of five molecules.Which one displays the MOST hydrogen bonding?

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Nickel has a face-centred cubic structure and has a density of 8.90 g cm^-3.What is its atomic radius?

NaCl crystallizes in a cubic unit cell with Cl^- ions on each corner and each face.How many Na⁺ and Cl^- ions are in each unit cell of NaCl?

The triple point of H₂O is at 4.58 mmHg and +0.01 °C.Some H₂O at -50 °C is heated to 120 °C at a constant pressure of 0.5 atm.The changes of state occurring in this process are:

Arrange in order by decreasing boiling point: CH₃CH₂OH,HOCH₂CH₂OH,C₄H₁₀

Given the following information,calculate ΔH° (in kcal mol^-1)for: I(g)+ e^- → I^-(g)