Question 1

Which response lists all the following pairs that are miscible liquids? I.octane (C8H18) and water
II) acetic acid (CH3COOH) and water
III) octane (C8H18) and carbon tetrachloride (CCl4)

Accepted Answer

A)  I and III
B)  I and II
C)  III only
D)  II only
E)  II and IIIF) A) and D)
G) A) and B)

Question 2

The distinguishing characteristic of all electrolyte solutions is that they

Accepted Answer

A)  contain molecules.
B)  conduct electricity.
C)  react with other solutions.
D)  always contain acids.
E)  conduct heat.F) B) and C)
G) A) and E)

Question 3

Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent.What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.57°C? (For ethanol,Kb = 1.22°C/m; boiling point of pure ethanol = 78.37°C)

Accepted Answer

A)  62.4 g
B)  67.8 g
C)  76.2 g
D)  78.5 g
E)  79.6 gF) None of the above
G) All of the above

Question 4

Which of these compounds is a weak electrolyte?

Accepted Answer

A)  HCl
B)  NH3
C)  C6H12O6 (glucose) 
D)  N2
E)  KClF) A) and C)
G) A) and B)

Question 5

What is the molality of a solution prepared by dissolving 84.7 g of KMnO4 in 165 g of water?

Accepted Answer

A)  0.339 m
B)  0.513 m
C)  0.536 m
D)  3.25 m
E)  81.1 mF) A) and C)
G) C) and D)

Question 6

Explain the following,on the basis of osmosis or osmotic pressure: Drinking salt water actually dehydrates our tissues.

Accepted Answer

The water passes fro...

Question 7

Below is a diagram representing a gas G in equilibrium,above a sample of water and dissolved in the water.  If the pressure of the gas G is doubled,which diagram below best represents how the system will respond?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) None of the above
G) B) and C)

Question 8

Which of the following sets of conditions could exist when two liquids which are completely miscible in one another are mixed?

Accepted Answer

A)  ΔHsoln > 0,entropy of system decreases
B)  ΔHsoln ≈ 0,entropy of system decreases
C)  ΔHsoln ≈ 0,entropy change of system ≈ 0
D)  ΔHsoln ≈ 0,entropy of system increases
E)  None of these choices is correct.F) None of the above
G) B) and D) D

Question 9

What is the molarity of a solution of 10.0% by mass cadmium sulfate,CdSO4 (208.47g/mol) ? The density of the solution is 1.10 g/mL.

Accepted Answer

A)  0.528 M
B)  0.436 M
C)  0.479 M
D)  0.100 M
E)  1.89 MF) A) and B)
G) D) and E)

Question 10

What volume of water (d = 1.00 g/mL) should be added to 600.mL of ethanol in order to have a solution that boils at 95.0°C? (For ethanol,Kb = 1.22 °C/m; density = 0.789 g/cm3; boiling point = 78.4°C)

Accepted Answer

A)  186 mL
B)  245 mL
C)  518 mL
D)  116 mL
E)  322 mLF) C) and E)
G) A) and B)

Question 11

An emulsion is a dispersion consisting of a

Accepted Answer

A)  solid in a liquid.
B)  liquid in a liquid.
C)  gas in a liquid.
D)  liquid in a solid.
E)  gas in a solid.F) All of the above
G) A) and E)

Question 12

A(n)_______________ ___________ is the name given to the material which allows the passage of solvent molecules but blocks the passage of solute molecules.

Accepted Answer

semipermea...

Question 13

g of benzene by 0.47°C? (Kf of benzene is 5.12°C/m.)

Accepted Answer

A)  93 g/mol
B)  78 g/mol
C)  10.7 g/mol
D)  82 g/mol
E)  927 g/molF) B) and D)
G) C) and E)

Question 14

__________ colloids are solutions containing extremely large molecules such as proteins.These colloids are also termed "water loving".

Accepted Answer

A)  Hydrophobic
B)  Aerosol
C)  Hydrophilic
D)  Emulsion
E)  Solid solF) D) and E)
G) A) and E)

Question 15

The structure of Vitamin B1,thiamine,is shown here.Vitamin B1 is most soluble in _________.

Accepted Answer

A)  fats
B)  water
C)  air
D)  carbon tetrachloride
E)  octaneF) B) and C)
G) None of the above

Question 16

If the shell of a raw egg is carefully dissolved away,and the egg in its flexible membrane is then placed in distilled water,the egg's volume will expand.Explain.

Accepted Answer

The osmotic pressure of the solution ins...

Question 17

Which of these compounds is a weak electrolyte?

Accepted Answer

A)  HCl
B)  CH3COOH (acetic acid) 
C)  C6H12O6 (glucose) 
D)  O2
E)  NaClF) All of the above
G) A) and B) B

Question 18

Automobile radiators usually carry a sticker that indicates that they must contain an antifreeze solution for proper operation,winter or summer.Why should you not use ordinary water during the summer?

Accepted Answer

The antifreeze will lower the vapor pres...

Question 19

What relationship states that the partial pressure of a solvent over a solution is given by the vapor pressure of the pure solvent times the mole fraction of the solvent in the solution?

Accepted Answer

A)  Henry's law
B)  Law of partial pressures
C)  Curie's law
D)  Raoult's law
E)  Vapor pressureF) A) and D)
G) C) and D)

Question 20

When sodium chloride dissolves in water,what stabilizes the ions in solution?

Accepted Answer

The ion-dipole interactions of hydration

Exam 13: Physical Properties of Solutions

Which response lists all the following pairs that are miscible liquids? I.octane (C8H18) and water II) acetic acid (CH3COOH) and water III) octane (C8H18) and carbon tetrachloride (CCl4)

Correct AnswerverifiedShow Answer

The distinguishing characteristic of all electrolyte solutions is that they

Correct AnswerverifiedShow Answer

Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent.What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.57°C? (For ethanol,Kb = 1.22°C/m; boiling point of pure ethanol = 78.37°C)

Correct AnswerverifiedShow Answer

Which of these compounds is a weak electrolyte?

Correct AnswerverifiedShow Answer

What is the molality of a solution prepared by dissolving 84.7 g of KMnO4 in 165 g of water?

Correct AnswerverifiedShow Answer

Explain the following,on the basis of osmosis or osmotic pressure: Drinking salt water actually dehydrates our tissues.

Correct AnswerverifiedThe water passes fro...View AnswerShow Answer

Below is a diagram representing a gas G in equilibrium,above a sample of water and dissolved in the water. If the pressure of the gas G is doubled,which diagram below best represents how the system will respond?

Correct AnswerverifiedShow Answer

Which of the following sets of conditions could exist when two liquids which are completely miscible in one another are mixed?

Correct AnswerverifiedD

What is the molarity of a solution of 10.0% by mass cadmium sulfate,CdSO4 (208.47g/mol) ? The density of the solution is 1.10 g/mL.

Correct AnswerverifiedShow Answer

What volume of water (d = 1.00 g/mL) should be added to 600.mL of ethanol in order to have a solution that boils at 95.0°C? (For ethanol,Kb = 1.22 °C/m; density = 0.789 g/cm3; boiling point = 78.4°C)

Correct AnswerverifiedShow Answer

An emulsion is a dispersion consisting of a

Correct AnswerverifiedShow Answer

A(n)_______________ ___________ is the name given to the material which allows the passage of solvent molecules but blocks the passage of solute molecules.

Correct Answerverifiedsemipermea...View AnswerShow Answer

g of benzene by 0.47°C? (Kf of benzene is 5.12°C/m.)

Correct AnswerverifiedShow Answer

__________ colloids are solutions containing extremely large molecules such as proteins.These colloids are also termed "water loving".

Correct AnswerverifiedShow Answer

The structure of Vitamin B1,thiamine,is shown here.Vitamin B1 is most soluble in _________.

Correct AnswerverifiedShow Answer

If the shell of a raw egg is carefully dissolved away,and the egg in its flexible membrane is then placed in distilled water,the egg's volume will expand.Explain.

Correct AnswerverifiedThe osmotic pressure of the solution ins...View AnswerShow Answer

Which of these compounds is a weak electrolyte?

Correct AnswerverifiedB

Automobile radiators usually carry a sticker that indicates that they must contain an antifreeze solution for proper operation,winter or summer.Why should you not use ordinary water during the summer?

Correct AnswerverifiedThe antifreeze will lower the vapor pres...View AnswerShow Answer

What relationship states that the partial pressure of a solvent over a solution is given by the vapor pressure of the pure solvent times the mole fraction of the solvent in the solution?

Correct AnswerverifiedShow Answer

When sodium chloride dissolves in water,what stabilizes the ions in solution?

Correct AnswerverifiedThe ion-dipole interactions of hydration

Which response lists all the following pairs that are miscible liquids? I.octane (C₈H₁₈) and water II) acetic acid (CH₃COOH) and water III) octane (C₈H₁₈) and carbon tetrachloride (CCl₄)

Correct Answer
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Correct Answer
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Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent.What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.57°C? (For ethanol,K_b = 1.22°C/m; boiling point of pure ethanol = 78.37°C)

Correct Answer
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Correct Answer
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What is the molality of a solution prepared by dissolving 84.7 g of KMnO₄ in 165 g of water?

Correct Answer
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Correct Answer
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The water passes fro...
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Correct Answer
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Correct Answer
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D

What is the molarity of a solution of 10.0% by mass cadmium sulfate,CdSO₄ (208.47g/mol) ? The density of the solution is 1.10 g/mL.

Correct Answer
verified

What volume of water (d = 1.00 g/mL) should be added to 600.mL of ethanol in order to have a solution that boils at 95.0°C? (For ethanol,K_b = 1.22 °C/m; density = 0.789 g/cm³; boiling point = 78.4°C)

Correct Answer
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Correct Answer
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A(n)_____ _ is the name given to the material which allows the passage of solvent molecules but blocks the passage of solute molecules.

Correct Answer
verified
semipermea...
View Answer

g of benzene by 0.47°C? (K_f of benzene is 5.12°C/m.)

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The osmotic pressure of the solution ins...
View Answer

Correct Answer
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B

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The antifreeze will lower the vapor pres...
View Answer

Correct Answer
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Correct Answer
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The ion-dipole interactions of hydration