Question 1

At constant temperature the pressure on a 10.0 L sample of gas is changed from 1.00 atm to 1140 torr. What is the new volume of the gas sample?

Accepted Answer

A)  0.00877 L 
B)  6.67 L 
C)  15.0 L 
D)  114 L 
A)  0.00877 L 
B)  6.67 L 
C)  15.0 L 
D)  114 L

Question 2

Which of the following will occur if the temperature of a gas is decreased from 60 K to 30 K at constant pressure?

Accepted Answer

A)  The volume will double. 
B)  The volume will be halved. 
C)  The volume will decrease slightly. 
D)  The volume will increase slightly. 
A)  The volume will double. 
B)  The volume will be halved. 
C)  The volume will decrease slightly. 
D)  The volume will increase slightly.

Question 3

According to the kinetic molecular theory, which of the following is not true?

Accepted Answer

A)  Gas molecules are assumed to have no volume. 
B)  Gas pressure is caused by collisions between gas molecules and the container walls. 
C)  When gas molecules collide energy is lost. 
D)  None, all of the above are true. 
A)  Gas molecules are assumed to have no volume. 
B)  Gas pressure is caused by collisions between gas molecules and the container walls. 
C)  When gas molecules collide energy is lost. 
D)  None, all of the above are true.

Question 4

A vessel under 2.015 atm pressure contains nitrogen, N2, and water vapor, H2O. The partial pressure of N2 is 1.908 atm. What is the partial pressure of the water vapor?

Accepted Answer

A)  0.107 atm 
B)  1.908 atm 
C)  2.015 atm 
D)  3.923 atm 
A)  0.107 atm 
B)  1.908 atm 
C)  2.015 atm 
D)  3.923 atm

Question 5

Consider the following heating curve for the generic substance Z.  
-About how much energy was added to convert all of this sample of Z from the liquid at the boiling point to the gas at the boiling point?

Accepted Answer

A)  60 cal 
B)  80 cal 
C)  550 cal 
D)  780 cal 
A)  60 cal 
B)  80 cal 
C)  550 cal 
D)  780 cal

Question 6

The normal boiling point of acetic acid is 117.9°C. Which of the following is true?

Accepted Answer

A)  The vapor pressure of acetic acid at 100°C is greater than 760 torr. 
B)  The vapor pressure of acetic acid at 100°C is equal to 760 torr. 
C)  The vapor pressure of acetic acid at 100°C is less than 760 torr. 
D)  There is insufficient information to answer the question. 
A)  The vapor pressure of acetic acid at 100°C is greater than 760 torr. 
B)  The vapor pressure of acetic acid at 100°C is equal to 760 torr. 
C)  The vapor pressure of acetic acid at 100°C is less than 760 torr. 
D)  There is insufficient information to answer the question.

Question 7

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear)  
-Crossing the curve designated AD in the direction of high temperature to low temperature is associated with which of the following phase transitions?

Accepted Answer

A)  solid to liquid 
B)  solid to vapor 
C)  liquid to vapor 
D)  vapor to solid 
A)  solid to liquid 
B)  solid to vapor 
C)  liquid to vapor 
D)  vapor to solid

Question 8

Which of the following molecules can have dipole-dipole interactions?

Accepted Answer

A)  CH4 
B)  CO2 
C)  both a and b 
D)  neither a nor b 
A)  CH4 
B)  CO2 
C)  both a and b 
D)  neither a nor b

Question 9

A sample of carbon dioxide occupies 22.4 L at STP. Which of the following statements apply to the sample?

Accepted Answer

A)  The sample contains 6.02 × 1023 carbon atoms. 
B)  The sample contains 6.02 × 1023 molecules. 
C)  Both a and b are correct. 
D)  Neither a nor b is correct. 
A)  The sample contains 6.02 × 1023 carbon atoms. 
B)  The sample contains 6.02 × 1023 molecules. 
C)  Both a and b are correct. 
D)  Neither a nor b is correct.

Question 10

If 2.00 moles of NO gas occupies 10.0 L at 295 K, what is the pressure of the gas in atmospheres?

Accepted Answer

A)  0.206 atm 
B)  2.42 atm 
C)  4.84 atm 
D)  9.33 atm 
A)  0.206 atm 
B)  2.42 atm 
C)  4.84 atm 
D)  9.33 atm

Question 11

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear)  
-Point A is associated with which of the following?

Accepted Answer

A)  solid   liquid 
B)  solid   vapor 
C)  liquid   vapor 
D)  solid   liquid   vapor 
A)  solid   liquid 
B)  solid   vapor 
C)  liquid   vapor 
D)  solid   liquid   vapor

Question 12

Standard temperature and pressure are which of the following?

Accepted Answer

A)  0 °C and 1 atm 
B)  32 °F and 1 atm 
C)  273 K and 1 atm 
D)  all of these 
A)  0 °C and 1 atm 
B)  32 °F and 1 atm 
C)  273 K and 1 atm 
D)  all of these

Question 13

Which of the following have an effect on the strength of London dispersion forces?

Accepted Answer

A)  the number of electrons 
B)  size 
C)  shape 
D)  all of them 
A)  the number of electrons 
B)  size 
C)  shape 
D)  all of them

Question 14

At constant temperature the pressure on a 6.0 L sample of gas is increased from 1.0 atm to 2.0 atm. What is the new volume of the gas sample?

Accepted Answer

A)  0.33 L 
B)  0.67 K 
C)  1.5 L 
D)  3.0 L 
A)  0.33 L 
B)  0.67 K 
C)  1.5 L 
D)  3.0 L

Question 15

Which of the following characteristics of a liquid sample is associated with the intermolecular forces which are present?

Accepted Answer

A)  its mass 
B)  its shape 
C)  its surface tension 
D)  its volume 
A)  its mass 
B)  its shape 
C)  its surface tension 
D)  its volume

Question 16

Which of the following instruments is used to measure atmospheric pressure?

Accepted Answer

A)  an altimeter 
B)  a barometer 
C)  a manometer 
D)  an odometer 
A)  an altimeter 
B)  a barometer 
C)  a manometer 
D)  an odometer

Question 17

Consider the following heating curve for the generic substance Z.  
-What is the melting point of substance Z?

Accepted Answer

A)  20 °C 
B)  30 °C 
C)  80 °C 
D)  90 °C 
A)  20 °C 
B)  30 °C 
C)  80 °C 
D)  90 °C

Question 18

Which of the following is a mathematical statement of Gay-Lussac's Law?

Accepted Answer

A)  P1V2 = P2V1 
B)  P1V1 = P2V2 
C)  P1T2 = P2T1 
D)  P1T1 = P2T2 
A)  P1V2 = P2V1 
B)  P1V1 = P2V2 
C)  P1T2 = P2T1 
D)  P1T1 = P2T2

Question 19

Which of the following is true of London dispersion forces?

Accepted Answer

A)  They decrease as the number of electrons in a molecule increases. 
B)  They are only present in some molecules. 
C)  Both a and b are correct. 
D)  Neither a nor b is correct. 
A)  They decrease as the number of electrons in a molecule increases. 
B)  They are only present in some molecules. 
C)  Both a and b are correct. 
D)  Neither a nor b is correct.

Question 20

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear)  
-Crossing the line designated AB in the direction of high pressure to low pressure is associated with which of the following phase transitions?

Accepted Answer

A)  solid to liquid 
B)  solid to vapor 
C)  liquid to solid 
D)  liquid to vapor 
A)  solid to liquid 
B)  solid to vapor 
C)  liquid to solid 
D)  liquid to vapor

Exam 5: Gases, Liquids, and Solids

At constant temperature the pressure on a 10.0 L sample of gas is changed from 1.00 atm to 1140 torr. What is the new volume of the gas sample?

Which of the following will occur if the temperature of a gas is decreased from 60 K to 30 K at constant pressure?

According to the kinetic molecular theory, which of the following is not true?

A vessel under 2.015 atm pressure contains nitrogen, N2, and water vapor, H2O. The partial pressure of N2 is 1.908 atm. What is the partial pressure of the water vapor?

Consider the following heating curve for the generic substance Z. -About how much energy was added to convert all of this sample of Z from the liquid at the boiling point to the gas at the boiling point?

The normal boiling point of acetic acid is 117.9°C. Which of the following is true?

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear) -Crossing the curve designated AD in the direction of high temperature to low temperature is associated with which of the following phase transitions?

Which of the following molecules can have dipole-dipole interactions?

A sample of carbon dioxide occupies 22.4 L at STP. Which of the following statements apply to the sample?

If 2.00 moles of NO gas occupies 10.0 L at 295 K, what is the pressure of the gas in atmospheres?

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear) -Point A is associated with which of the following?

Standard temperature and pressure are which of the following?

Which of the following have an effect on the strength of London dispersion forces?

At constant temperature the pressure on a 6.0 L sample of gas is increased from 1.0 atm to 2.0 atm. What is the new volume of the gas sample?

Which of the following characteristics of a liquid sample is associated with the intermolecular forces which are present?

Which of the following instruments is used to measure atmospheric pressure?

Consider the following heating curve for the generic substance Z. -What is the melting point of substance Z?

Which of the following is a mathematical statement of Gay-Lussac's Law?

Which of the following is true of London dispersion forces?

Consider the following phase diagram of water. The temperature and pressure scales are greatly reduced (and are non-linear) -Crossing the line designated AB in the direction of high pressure to low pressure is associated with which of the following phase transitions?

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A vessel under 2.015 atm pressure contains nitrogen, N₂, and water vapor, H₂O. The partial pressure of N₂ is 1.908 atm. What is the partial pressure of the water vapor?