Question 1

Place the following substances in order of decreasing boiling point. F2 Br2 H2

Accepted Answer

A)  Br2 > H2  > F2 
B)  F2 > H2 > Br2 
C)  F2 > Br2 > H2 
D)  Br2 > F2 > H2 
E)  H2 > F2 > Br2 
A)  Br2 > H2  > F2 
B)  F2 > H2 > Br2 
C)  F2 > Br2 > H2 
D)  Br2 > F2 > H2 
E)  H2 > F2 > Br2

Question 2

Place the following compounds in order of increasing boiling point. LiF N2 CH3CH2NH2

Accepted Answer

A)  NH2CH3 2 
B)  N2 2CH3 2CH3 2  2   2CH3 
E)  LiF 2CH3 2 
A)  NH2CH3 2 
B)  N2 2CH3 2CH3 2  2   2CH3 
E)  LiF 2CH3 2

Question 3

The enthalpy change for converting 10.0 g of ice at -50.0°C to water at 70.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and
1)84 J/gK,respectively.For H2O,ΔHfus = 6.01 kJ/mol,and ΔHvap = 40.67 kJ/mol.

Accepted Answer

A)  12.28 
B)  5.22 
C)  3974 
D)  7.31 
E)  9.98 
A)  12.28 
B)  5.22 
C)  3974 
D)  7.31 
E)  9.98

Question 4

Identify the compound with the highest boiling point.

Accepted Answer

A)  CH4 
B)  PH3 
C)  HCl 
D)  H2Se 
E)  H2O 
A)  CH4 
B)  PH3 
C)  HCl 
D)  H2Se 
E)  H2O

Question 5

Match between columns
                        Premises: LiI
CHS1U1B13S1U1B0OH
CHS1U1B12S1U1B0FS1U1B12S1U1B0
CHS1U1B13S1U1B0CHS1U1B13S1U1B0
LiI + HS1U1B12S1U1B0O

Accepted Answer

The Answer of hydrogen bonding and dispersion forces and dipole-dipole is...

Question 6

Match between columns
                        Premises: LiI
LiI + HS1U1B12S1U1B0O
CHS1U1B13S1U1B0OH
CHS1U1B12S1U1B0FS1U1B12S1U1B0
CHS1U1B13S1U1B0CHS1U1B13S1U1B0

Accepted Answer

The Answer of ionic bond and HS1U1B12S1U1B0 + HS1U1B12S1U1B0O and is...

Question 7

Place the following compounds in order of decreasing strength of intermolecular forces. HF F2 CO2

Accepted Answer

A)  HF > CO2  > F2 
B)  HF > F2 > CO2  
C)  F2 > CO2  > HF 
D)  CO2 > HF > F2 
E)  CO2 > F2 > HF 
A)  HF > CO2  > F2 
B)  HF > F2 > CO2  
C)  F2 > CO2  > HF 
D)  CO2 > HF > F2 
E)  CO2 > F2 > HF

Question 8

Define condensation.

Accepted Answer

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

Question 9

Define triple point.

Accepted Answer

A)  the temperature, pressure, and density for a gas 
B)  the temperature at which the vaporization equals the melting point 
C)  the temperature and pressure where liquid, solid, and gas are equally stable and are in equilibrium 
D)  the temperature that is unique for a substance 
E)  the temperature at which the solid and gas co-exist 
A)  the temperature, pressure, and density for a gas 
B)  the temperature at which the vaporization equals the melting point 
C)  the temperature and pressure where liquid, solid, and gas are equally stable and are in equilibrium 
D)  the temperature that is unique for a substance 
E)  the temperature at which the solid and gas co-exist

Question 10

For automobile engines,identify the best choice of motor oil.

Accepted Answer

A)  high SAE for Maine in the winter and low SAE for Florida in the summer 
B)  low SAE for Maine in the winter and low SAE for Florida in the summer 
C)  high SAE for Maine in the winter and high SAE for Florida in the summer 
D)  low SAE for Maine in the winter and high SAE for Florida in the summer 
E)  It does not matter what the rating is for the motor oil. 
A)  high SAE for Maine in the winter and low SAE for Florida in the summer 
B)  low SAE for Maine in the winter and low SAE for Florida in the summer 
C)  high SAE for Maine in the winter and high SAE for Florida in the summer 
D)  low SAE for Maine in the winter and high SAE for Florida in the summer 
E)  It does not matter what the rating is for the motor oil.

Question 11

The fluorocarbon C2Cl3F3 has a normal boiling point of 47.6°C.The specific heats of C2Cl3F3(l)and C2Cl3F3(g)are 0.91 J/gK and 0.67 J/gK,respectively.The heat of vaporization of the compound is 27.49 kJ/mol.The heat required to convert 50.0 g of the compound from the liquid at   to the gas at 65.0°C is ________ kJ.

Accepted Answer

A)  8.46 
B)  1454 
C)  29.78 
D)  2301 
E)  9.63 
A)  8.46 
B)  1454 
C)  29.78 
D)  2301 
E)  9.63

Question 12

Which has the smallest dipole-dipole forces?

Accepted Answer

A)  CH3CH2Cl 
B)  HI  
C)  F2 
D)  CO  
A)  CH3CH2Cl 
B)  HI  
C)  F2 
D)  CO

Question 13

Define sublimation.

Accepted Answer

A)  the phase transition from solid to gas 
B)  the phase transition from gas to solid 
C)  the phase transition from gas to liquid 
D)  the phase transition from liquid to gas 
E)  the phase transition from liquid to solid 
A)  the phase transition from solid to gas 
B)  the phase transition from gas to solid 
C)  the phase transition from gas to liquid 
D)  the phase transition from liquid to gas 
E)  the phase transition from liquid to solid

Question 14

The heat of vaporization of water at 100°C is 40.66 kJ/mol.Calculate the quantity of heat that is absorbed/released when 6.00 g of steam condenses to liquid water at 100°C.

Accepted Answer

A)  13.5 kJ of heat are absorbed. 
B)  13.5 kJ of heat are released. 
C)  122 kJ of heat are absorbed. 
D)  122 kJ of heat are released. 
E)  244 kJ of heat are released. 
A)  13.5 kJ of heat are absorbed. 
B)  13.5 kJ of heat are released. 
C)  122 kJ of heat are absorbed. 
D)  122 kJ of heat are released. 
E)  244 kJ of heat are released.

Question 15

Place the following substances in order of decreasing vapor 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 
A)  BrF3 > PF5 > CF4 
B)  BrF3 > CF4  > PF5 
C)  PF5 > BrF3  > CF4 
D)  CF4 > BrF3 > PF5 
E)  CF4 > PF5 > BrF3

Question 16

Identify the characteristics of a gas.

Accepted Answer

A)  indefinite shape and volume 
B)  indefinite shape, but definite volume 
C)  definite shape and volume 
D)  none of the above 
E)  all of the above 
A)  indefinite shape and volume 
B)  indefinite shape, but definite volume 
C)  definite shape and volume 
D)  none of the above 
E)  all of the above

Question 17

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔHvap of 22.1 kJ/mol.

Accepted Answer

A)  239 torr 
B)  31.8 torr 
C)  41.8 torr 
D)  147 torr 
E)  98 torr 
A)  239 torr 
B)  31.8 torr 
C)  41.8 torr 
D)  147 torr 
E)  98 torr

Question 18

At atmospheric pressure,dry ice

Accepted Answer

A)  freezes. 
B)  deposits. 
C)  sublimes. 
D)  melts. 
E)  boils. 
A)  freezes. 
B)  deposits. 
C)  sublimes. 
D)  melts. 
E)  boils.

Question 19

Identify the state of matter that is the most compressible.

Accepted Answer

A)  gas 
B)  solid 
C)  liquid 
D)  All are compressible. 
E)  None is compressible. 
A)  gas 
B)  solid 
C)  liquid 
D)  All are compressible. 
E)  None is compressible.

Question 20

Define vaporization.

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. 
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.

Exam 11: Liquids,solids,and Intermolecular Forces

Place the following substances in order of decreasing boiling point. F2 Br2 H2

Place the following compounds in order of increasing boiling point. LiF N2 CH3CH2NH2

The enthalpy change for converting 10.0 g of ice at -50.0°C to water at 70.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and 1)84 J/gK,respectively.For H2O,ΔHfus = 6.01 kJ/mol,and ΔHvap = 40.67 kJ/mol.

Identify the compound with the highest boiling point.

Place the following compounds in order of decreasing strength of intermolecular forces. HF F2 CO2

Define condensation.

Define triple point.

For automobile engines,identify the best choice of motor oil.

Which has the smallest dipole-dipole forces?

Define sublimation.

The heat of vaporization of water at 100°C is 40.66 kJ/mol.Calculate the quantity of heat that is absorbed/released when 6.00 g of steam condenses to liquid water at 100°C.

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

Identify the characteristics of a gas.

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔHvap of 22.1 kJ/mol.

At atmospheric pressure,dry ice

Identify the state of matter that is the most compressible.

Define vaporization.

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Place the following substances in order of decreasing boiling point. F₂ Br₂ H₂

Place the following compounds in order of increasing boiling point. LiF N₂ CH₃CH₂NH₂

The enthalpy change for converting 10.0 g of ice at -50.0°C to water at 70.0°C is ________ kJ.The specific heats of ice,water,and steam are 2.09 J/gK,4.18 J/gK,and 1)84 J/gK,respectively.For H₂O,ΔH_fus = 6.01 kJ/mol,and ΔH_vap =40.67 kJ/mol.

Place the following compounds in order of decreasing strength of intermolecular forces. HF F₂CO₂

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

Determine the vapor pressure (in torr)of a substance at 36°C,whose normal boiling point is 84°C and has a ΔH_vapof 22.1 kJ/mol.