Question 1

Choose the molecule or compound that exhibits dispersion forces as its strongest intermolecular force.

Accepted Answer

A)  O2 
B)  CO 
C)  HF 
D)  NaCl 
E)  All of these have intermolecular forces stronger than dispersion. 
A)  O2 
B)  CO 
C)  HF 
D)  NaCl 
E)  All of these have intermolecular forces stronger than dispersion.

Question 2

Identify the term used to describe the ability of a liquid to flow against gravity up a narrow tube.

Accepted Answer

A)  capillary action 
B)  viscosity 
C)  surface tension 
D)  density 
E)  none of the above 
A)  capillary action 
B)  viscosity 
C)  surface tension 
D)  density 
E)  none of the above

Question 3

Define volatile.

Accepted Answer

Liquids th

Question 4

The heat of vaporization of acetone is 31.3 kJ/mol,and a a boiling point of 78.6° at 1520 mm Hg.What is the boiling point when the pressure is raised to 7600 mm Hg?

Accepted Answer

A)  211°C 
B)  182°C 
C)  83.5°C 
D)  141°C 
E)  118°C 
A)  211°C 
B)  182°C 
C)  83.5°C 
D)  141°C 
E)  118°C

Question 5

Place the following compounds in order of increasing strength of intermolecular forces. CH4 CH3CH2CH3 CH3CH3

Accepted Answer

A)  CH3CH2CH3 4 3CH3 
B)  CH3CH2CH3 3CH3 4 
C)  CH3CH3 4 3CH2CH3 
D)  CH4 3CH2CH3 3CH3 
E)  CH4 3CH3 3CH2CH3 
A)  CH3CH2CH3 4 3CH3 
B)  CH3CH2CH3 3CH3 4 
C)  CH3CH3 4 3CH2CH3 
D)  CH4 3CH2CH3 3CH3 
E)  CH4 3CH3 3CH2CH3

Question 6

Why do O,F and N,when bonded to H,form such strong intermolecular attractions to neighboring molecules?
 Make sure to be specific.

Accepted Answer

Oxygen,fluorine and nitrogen are all ver

Question 7

How much energy is required to vaporize 158 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Accepted Answer

A)  15.1 kJ 
B)  66.1 kJ 
C)  41.9 kJ 
D)  2.60 kJ 
E)  38.4 kJ 
A)  15.1 kJ 
B)  66.1 kJ 
C)  41.9 kJ 
D)  2.60 kJ 
E)  38.4 kJ

Question 8

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 9

Based on the figure above,the boiling point of ethyl alcohol under an external pressure of   is ________ °C.

Accepted Answer

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

Question 10

Consider the phase diagram shown.What is the triple point?

Accepted Answer

A)  72.9 atm, 31 °C 
B)  5.1 atm, -56.7 °C 
C)  1 atm, -78.5 °C 
D)  5.1 atm, 31 °C 
E)  72.9 atm, -56.7 °C 
A)  72.9 atm, 31 °C 
B)  5.1 atm, -56.7 °C 
C)  1 atm, -78.5 °C 
D)  5.1 atm, 31 °C 
E)  72.9 atm, -56.7 °C

Question 11

In a liquid,the energy required to increase the surface area by a unit amount is called

Accepted Answer

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

Question 12

Identify the place which has the lowest boiling point of water.

Accepted Answer

A)  Death Valley, 282 feet below sea level 
B)  a pressurized passenger jet, 35,000 feet 
C)  New Orleans, sea level 
D)  Mt. Everest, 29,035 feet 
E)  Denver, Colorado, 5280 feet 
A)  Death Valley, 282 feet below sea level 
B)  a pressurized passenger jet, 35,000 feet 
C)  New Orleans, sea level 
D)  Mt. Everest, 29,035 feet 
E)  Denver, Colorado, 5280 feet

Question 13

Choose the substance with the highest vapor pressure at a given temperature.

Accepted Answer

A)  SiS2 
B)  RbCl 
C)  CH3SCH3 
D)  BF3 
E)  SbH3 
A)  SiS2 
B)  RbCl 
C)  CH3SCH3 
D)  BF3 
E)  SbH3

Question 14

Define boiling point of a liquid.

Accepted Answer

The temperature at w

Question 15

Which of the following compounds exhibits hydrogen bonding?

Accepted Answer

A)  CH3I 
B)  HBr  
C)  CH3OCH3 
D)  CH3NH2 
A)  CH3I 
B)  HBr  
C)  CH3OCH3 
D)  CH3NH2

Question 16

Consider the phase diagram shown.What is the normal boiling point?

Accepted Answer

A)  31°C 
B)  -56.7 °C 
C)  -78.5 °C 
D)  0°C 
E)  100°C 
A)  31°C 
B)  -56.7 °C 
C)  -78.5 °C 
D)  0°C 
E)  100°C

Question 17

Define boiling.

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.

Question 18

What is the strongest type of intermolecular force present in CH2F2?

Accepted Answer

A)  dispersion 
B)  dipole-dipole 
C)  hydrogen bonding 
D)  ion-dipole 
E)  none of the above 
A)  dispersion 
B)  dipole-dipole 
C)  hydrogen bonding 
D)  ion-dipole 
E)  none of the above

Question 19

Choose the substance with the highest surface tension.

Accepted Answer

A)  HOCH2CH2OH 
B)  CH2Br2 
C)  CH3CH2Cl 
D)  CH3CH2OH 
E)  CH3CH2CH3 
A)  HOCH2CH2OH 
B)  CH2Br2 
C)  CH3CH2Cl 
D)  CH3CH2OH 
E)  CH3CH2CH3

Question 20

Define freezing.

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

Exam 12: Liquids, Solids, and Intermolecular Forces

Choose the molecule or compound that exhibits dispersion forces as its strongest intermolecular force.

Identify the term used to describe the ability of a liquid to flow against gravity up a narrow tube.

Define volatile.

The heat of vaporization of acetone is 31.3 kJ/mol,and a a boiling point of 78.6° at 1520 mm Hg.What is the boiling point when the pressure is raised to 7600 mm Hg?

Place the following compounds in order of increasing strength of intermolecular forces. CH4 CH3CH2CH3 CH3CH3

Why do O,F and N,when bonded to H,form such strong intermolecular attractions to neighboring molecules? Make sure to be specific.

How much energy is required to vaporize 158 g of butane (C4H10)at its boiling point,if its ΔHvap is 24.3 kJ/mol?

Identify the characteristics of a gas.

Based on the figure above,the boiling point of ethyl alcohol under an external pressure of is ________ °C.

Consider the phase diagram shown.What is the triple point?

In a liquid,the energy required to increase the surface area by a unit amount is called

Identify the place which has the lowest boiling point of water.

Choose the substance with the highest vapor pressure at a given temperature.

Define boiling point of a liquid.

Which of the following compounds exhibits hydrogen bonding?

Consider the phase diagram shown.What is the normal boiling point?

Define boiling.

What is the strongest type of intermolecular force present in CH2F2?

Choose the substance with the highest surface tension.

Define freezing.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Crystalline 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

Transition Metals and Coordination Compounds

Filters

Place the following compounds in order of increasing strength of intermolecular forces. CH₄ CH₃CH₂CH₃ CH₃CH₃

How much energy is required to vaporize 158 g of butane (C₄H₁₀)at its boiling point,if its ΔH_vap is 24.3 kJ/mol?

What is the strongest type of intermolecular force present in CH₂F₂?