Question 1

Generally if a liquid has stronger intermolecular attractions it will have

Accepted Answer

A)   a higher viscosity.
B)   a higher vapor pressure.
C)   a higher boiling point.
D)   a & b
E)   b & cF)  a & cG)  all of the aboveH) A) and E)
I) D) and F)

Question 2

Which has the highest vapor pressure at room temperature?

Accepted Answer

A)   methanol
B)   ethanol
C)   propanol
D)   butanol
E)   there is no way to predictF) None of the above
G) A) and B)

Question 3

Dipole-dipole forces are

Accepted Answer

A)   larger than ion-ion forces.
B)   about the same as all ion-ion forces.
C)   much smaller than ion-ion forces.
D)   between the force for °1 ions and °2 ions.
E)   about a factor of two smaller the attraction of °1 ions.F) A) and D)
G) A) and E)

Question 4

Which do you think will have the highest surface tension?

Accepted Answer

A)   water
B)   liquid N2
C)   CCl4
D)   CHCl3
E)   molten NaClF) B) and E)
G) A) and E)

Question 5

What types of intermolecular forces would you expect to find in CHCl3?

Accepted Answer

A)   dispersion
B)   dipole-dipole
C)   hydrogen bonding
D)   a & b
E)   all of the aboveF) All of the above
G) B) and C)

Question 6

At the triple point

Accepted Answer

A)   solid, liquid, and gas are all in equilibrium.
B)   the vapor pressure of the solid is equal to the vapor pressure of the liquid.
C)   the rate of sublimation is equal to the rate of evaporation.
D)   a & b
E)   all of the aboveF) A) and E)
G) B) and E)

Question 7

The process of a solid converting directly to a gas is called

Accepted Answer

A)   evaporation
B)   condensation
C)   deposition
D)   sublimation
E)   transformationF) A) and B)
G) A) and C)

Question 8

Which do you think has a higher boiling point, n-butanol or tert-butanol?

Accepted Answer

A)   n-butanol because it forms stronger hydrogen bonds.
B)   tert-butanol because it forms stronger hydrogen bonds.
C)   n-butanol because the linear molecule allows for greater dispersion forces.
D)   tert-butanol because the tetrahedral molecule allows for greater dispersion forces.
E)   they will be exactly the same.F) C) and E)
G) None of the above

Question 9

A supercritical fluid has a density that

Accepted Answer

A)   is lower than a liquid.
B)   is lower than a gas.
C)   is higher than a liquid.
D)   is higher than a gas.
E)   can be varied from gas-like to liquid-like.F) B) and E)
G) B) and D)

Question 10

The triple point of a compound is at 38.2°C and a pressure of 0.75 atm. A gaseous sample of the substance is held at a constant pressure of 0.79 atm. Initially the sample is at 50°C and is slowly cooled until it is -25°C. What if any phase transitions occur?

Accepted Answer

A)   condensation
B)   deposition
C)   condensation followed by freezing
D)   simultaneous condensation and freezing
E)   none of the aboveF) C) and D)
G) D) and E)

Question 11

At 20°C water has a vapor pressure of 0.0231 atm. If you bubble air through a container of water and collect 1 L of it at a total pressure of 1 atm, how many grams of water are in your sample of air (you can assume it is saturated) ?

Accepted Answer

A)   9.6×10-4
B)   3.0×10-4
C)   3.0×10-3
D)   1.1×10-2
E)   1.7×10-2F) A) and C)
G) A) and D)

Question 12

In the phase diagram of water increasing pressure leads to lower melting temperatures.

Accepted Answer

A)   this is true for all compounds
B)   this is true for all polar compounds
C)   this is true for all hydrogen bonding compounds
D)   this is true for compounds with solid phases that are less dense than their liquid phases
E)   this is true only for H2O, HF, and NH3F) A) and B)
G) A) and C)

Question 13

Which do you predict will have the largest intermolecular attraction F2, Cl2, Br2, I2?

Accepted Answer

A)   F2
B)   Cl2
C)   Br2
D)   I2
E)   they will all be the sameF) B) and C)
G) B) and D)

Exam 10: Solids, Liquids, and Phase Transitions

At the triple point

Correct Answer
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Which do you predict will have the largest intermolecular attraction F₂, Cl₂, Br₂, I₂?

Correct Answer
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Which do you think will have the highest surface tension?

Correct Answer
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A supercritical fluid has a density that

Correct Answer
verified

Which do you think has a higher boiling point, n-butanol or tert-butanol?

Correct Answer
verified

The triple point of a compound is at 38.2°C and a pressure of 0.75 atm. A gaseous sample of the substance is held at a constant pressure of 0.79 atm. Initially the sample is at 50°C and is slowly cooled until it is -25°C. What if any phase transitions occur?

Correct Answer
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What types of intermolecular forces would you expect to find in CHCl₃?

Correct Answer
verified

Which has the highest vapor pressure at room temperature?

Correct Answer
verified

Generally if a liquid has stronger intermolecular attractions it will have

Correct Answer
verified

At 20°C water has a vapor pressure of 0.0231 atm. If you bubble air through a container of water and collect 1 L of it at a total pressure of 1 atm, how many grams of water are in your sample of air (you can assume it is saturated) ?

Correct Answer
verified

Dipole-dipole forces are

Correct Answer
verified

The process of a solid converting directly to a gas is called

Correct Answer
verified

In the phase diagram of water increasing pressure leads to lower melting temperatures.

Correct Answer
verified

Exam 10: Solids, Liquids, and Phase Transitions

At the triple point

Correct AnswerverifiedShow Answer

Which do you predict will have the largest intermolecular attraction F2, Cl2, Br2, I2?

Correct AnswerverifiedShow Answer

Which do you think will have the highest surface tension?

Correct AnswerverifiedShow Answer

A supercritical fluid has a density that

Correct AnswerverifiedShow Answer

Which do you think has a higher boiling point, n-butanol or tert-butanol?

Correct AnswerverifiedShow Answer

The triple point of a compound is at 38.2°C and a pressure of 0.75 atm. A gaseous sample of the substance is held at a constant pressure of 0.79 atm. Initially the sample is at 50°C and is slowly cooled until it is -25°C. What if any phase transitions occur?

Correct AnswerverifiedShow Answer

What types of intermolecular forces would you expect to find in CHCl3?

Correct AnswerverifiedShow Answer

Which has the highest vapor pressure at room temperature?

Correct AnswerverifiedShow Answer

Generally if a liquid has stronger intermolecular attractions it will have

Correct AnswerverifiedShow Answer

At 20°C water has a vapor pressure of 0.0231 atm. If you bubble air through a container of water and collect 1 L of it at a total pressure of 1 atm, how many grams of water are in your sample of air (you can assume it is saturated) ?

Correct AnswerverifiedShow Answer

Dipole-dipole forces are

Correct AnswerverifiedShow Answer

The process of a solid converting directly to a gas is called

Correct AnswerverifiedShow Answer

In the phase diagram of water increasing pressure leads to lower melting temperatures.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Which do you predict will have the largest intermolecular attraction F₂, Cl₂, Br₂, I₂?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What types of intermolecular forces would you expect to find in CHCl₃?

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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Correct Answer
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Correct Answer
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