Question 1

Which of these compounds is a nonelectrolyte?

Accepted Answer

A)  NaF
B)  HNO3
C)  CH3COOH (acetic acid) 
D)  NaOH
E)  C6H12O6 (glucose) F) A) and E)
G) D) and E)

Question 2

What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution?

Accepted Answer

A)  Freezing point
B)  freezing-point elevation
C)  freezing-point depression
D)  Subzero freezing
E)  SupercoolingF) B) and E)
G) B) and D)

Question 3

______________ is the term used for a water fearing substance.

Accepted Answer

The answer of ______________ is the term used for a...

Question 4

Below is a diagram representing a solvent A(l) in a 1-L beaker,and a solute X dissolved in the solvent.Solvent A has a density of 0.8 g/mL,and a molar mass of 40 g/mol. Solute X has a molar mass of 30 g/mol.Each circle of X represents 1 mol of X.Assume that the solute addition does not significantly change the volume of liquid in the beaker.  What is the mass percent of solute X in this solution?

Accepted Answer

A)  0.4%
B)  3%
C)  12%
D)  13%
E)  20%F) D) and E)
G) B) and C)

Question 5

Human blood has a molar concentration of solutes of 0.30 M.What is the osmotic pressure of blood at 25°C? (R = 0.08206 L • atm/K • mol)

Accepted Answer

A)  0.012 atm
B)  0.62 atm
C)  6.8 atm
D)  7.3 atm
E)  11 atmF) A) and C)
G) A) and B)

Question 6

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Accepted Answer

A) True 
 B)False

Question 7

Explain the following,on the basis of osmosis or osmotic pressure: When sprinkled with sugar,a dish of sliced fruit will form its own juice.

Accepted Answer

The water inside the fruit cel...

Question 8

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water.(For water,Kf = 1.86°C/m)

Accepted Answer

A)  3.3°C
B)  1.1°C
C)  0.0°C
D)  -1.1°C
E)  -3.3°CF) C) and E)
G) A) and D)

Question 9

A solution of potassium hydroxide is in equilibrium with undissolved solute at 45°C.What will happen if the temperature is raised to 50°C? (ΔHsoln = -57.6 kJ/mol)

Accepted Answer

A)  The mass of undissolved KOH will increase.
B)  The mass of undissolved KOH will decrease.
C)  The mass of undissolved KOH will be unchanged.
D)  The mass of water in the solution will increase.
E)  The entropy of the system will decrease.F) A) and D)
G) A) and E)

Question 10

What is the vapor pressure above a solution prepared by dissolving 0.500 mol of a nonvolatile solute in 275 g of hexane (86.18 g/mol) at 49.6°C? P°hexane = 400.0 torr at 49.6°C.

Accepted Answer

A)  54 torr
B)  154 torr
C)  246 torr
D)  346 torr
E)  400.torrF) A) and B)
G) A) and C)

Question 11

What is the molarity of a solution that is 26.0% by mass phosphoric acid (H3PO4) and that has a density of 1.155 g/mL?

Accepted Answer

A)  2.30 × 10 -3 M
B)  2.30 M
C)  2.65 M
D)  3.06 M
E)  0.265 MF) B) and D)
G) C) and D)

Question 12

Which of the following aqueous solutions should demonstrate the most ideal behavior?

Accepted Answer

A)  0.1 M K2SO4
B)  0.1 M CaCl2
C)  3.0 M LiF
D)  0.1 M MgSO4
E)  0.1 M NaClF) A) and C)
G) A) and D)

Question 13

What is the freezing point of an aqueous solution of NaCl that boils at 102.5°C? (For water,Kf = 1.86°C/m; Kb = 0.52°C/m)

Accepted Answer

A)  2.5°C
B)  -2.5°C
C)  -0.70°C
D)  0.70°C
E)  -8.9°CF) None of the above
G) C) and E)

Question 14

A hydrophilic colloid must generally be stabilized.

Accepted Answer

A) True 
 B)False

Question 15

Safrole was once used as a flavoring in root beer,until it was banned in 1960.What is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol) ? P°ethanol = 50.0 torr at 25°C.

Accepted Answer

A)  1.8 torr
B)  11 torr
C)  15 torr
D)  40 torr
E)  48 torrF) A) and B)
G) A) and C)

Question 16

Which process defines how molecular compounds form ions upon dissolution?

Accepted Answer

A)  ionization
B)  composition
C)  division
D)  dissolution
E)  decompositionF) A) and E)
G) A) and D)

Question 17

Explain the following,on the basis of osmosis or osmotic pressure: Meat that is salted before cooking tends to dry out.

Accepted Answer

The water passes thr...

Question 18

Which substance is present in the smallest proportion in a solution?

Accepted Answer

A)  liquid
B)  gas
C)  solvent
D)  solid
E)  soluteF) A) and D)
G) All of the above

Question 19

Hydration is the process in which organic solvent molecules surround a solute particle.

Accepted Answer

A) True 
 B)False

Question 20

Dissolving a solute such as KOH in a solvent such as water results in

Accepted Answer

A)  an increase in the melting point of the liquid.
B)  a decrease in the boiling point of the liquid.
C)  a decrease in the vapor pressure of the liquid.
D)  no change in the boiling point of the liquid.E) All of the above
F) A) and C)

Exam 13: Physical Properties of Solutions

A hydrophilic colloid must generally be stabilized.

Correct Answer
verified

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Correct Answer
verified

Safrole was once used as a flavoring in root beer,until it was banned in 1960.What is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol) ? P°ethanol = 50.0 torr at 25°C.

Correct Answer
verified

Hydration is the process in which organic solvent molecules surround a solute particle.

Correct Answer
verified

What is the freezing point of an aqueous solution of NaCl that boils at 102.5°C? (For water,K_f = 1.86°C/m; K_b = 0.52°C/m)

Correct Answer
verified

What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution?

Correct Answer
verified

Explain the following,on the basis of osmosis or osmotic pressure: Meat that is salted before cooking tends to dry out.

Correct Answer
verified
The water passes thr...
View Answer

______________ is the term used for a water fearing substance.

Correct Answer
verified

Which substance is present in the smallest proportion in a solution?

Correct Answer
verified

A solution of potassium hydroxide is in equilibrium with undissolved solute at 45°C.What will happen if the temperature is raised to 50°C? (ΔH_soln = -57.6 kJ/mol)

Correct Answer
verified

Dissolving a solute such as KOH in a solvent such as water results in

Correct Answer
verified

What is the vapor pressure above a solution prepared by dissolving 0.500 mol of a nonvolatile solute in 275 g of hexane (86.18 g/mol) at 49.6°C? P°hexane = 400.0 torr at 49.6°C.

Correct Answer
verified

Which of these compounds is a nonelectrolyte?

Correct Answer
verified

What is the molarity of a solution that is 26.0% by mass phosphoric acid (H₃PO₄) and that has a density of 1.155 g/mL?

Correct Answer
verified

Which of the following aqueous solutions should demonstrate the most ideal behavior?

Correct Answer
verified

Explain the following,on the basis of osmosis or osmotic pressure: When sprinkled with sugar,a dish of sliced fruit will form its own juice.

Correct Answer
verified
The water inside the fruit cel...
View Answer

Correct Answer
verified

Which process defines how molecular compounds form ions upon dissolution?

Correct Answer
verified

Human blood has a molar concentration of solutes of 0.30 M.What is the osmotic pressure of blood at 25°C? (R = 0.08206 L • atm/K • mol)

Correct Answer
verified

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water.(For water,K_f = 1.86°C/m)

Correct Answer
verified

Exam 13: Physical Properties of Solutions

A hydrophilic colloid must generally be stabilized.

Correct AnswerverifiedShow Answer

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Correct AnswerverifiedShow Answer

Safrole was once used as a flavoring in root beer,until it was banned in 1960.What is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol) ? P°ethanol = 50.0 torr at 25°C.

Correct AnswerverifiedShow Answer

Hydration is the process in which organic solvent molecules surround a solute particle.

Correct AnswerverifiedShow Answer

What is the freezing point of an aqueous solution of NaCl that boils at 102.5°C? (For water,Kf = 1.86°C/m; Kb = 0.52°C/m)

Correct AnswerverifiedShow Answer

What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution?

Correct AnswerverifiedShow Answer

Explain the following,on the basis of osmosis or osmotic pressure: Meat that is salted before cooking tends to dry out.

Correct AnswerverifiedThe water passes thr...View AnswerShow Answer

______________ is the term used for a water fearing substance.

Correct AnswerverifiedShow Answer

Which substance is present in the smallest proportion in a solution?

Correct AnswerverifiedShow Answer

A solution of potassium hydroxide is in equilibrium with undissolved solute at 45°C.What will happen if the temperature is raised to 50°C? (ΔHsoln = -57.6 kJ/mol)

Correct AnswerverifiedShow Answer

Dissolving a solute such as KOH in a solvent such as water results in

Correct AnswerverifiedShow Answer

What is the vapor pressure above a solution prepared by dissolving 0.500 mol of a nonvolatile solute in 275 g of hexane (86.18 g/mol) at 49.6°C? P°hexane = 400.0 torr at 49.6°C.

Correct AnswerverifiedShow Answer

Which of these compounds is a nonelectrolyte?

Correct AnswerverifiedShow Answer

What is the molarity of a solution that is 26.0% by mass phosphoric acid (H3PO4) and that has a density of 1.155 g/mL?

Correct AnswerverifiedShow Answer

Which of the following aqueous solutions should demonstrate the most ideal behavior?

Correct AnswerverifiedShow Answer

Explain the following,on the basis of osmosis or osmotic pressure: When sprinkled with sugar,a dish of sliced fruit will form its own juice.

Correct AnswerverifiedThe water inside the fruit cel...View AnswerShow Answer

Correct AnswerverifiedShow Answer

Which process defines how molecular compounds form ions upon dissolution?

Correct AnswerverifiedShow Answer

Human blood has a molar concentration of solutes of 0.30 M.What is the osmotic pressure of blood at 25°C? (R = 0.08206 L • atm/K • mol)

Correct AnswerverifiedShow Answer

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water.(For water,Kf = 1.86°C/m)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the freezing point of an aqueous solution of NaCl that boils at 102.5°C? (For water,K_f = 1.86°C/m; K_b = 0.52°C/m)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The water passes thr...
View Answer

Correct Answer
verified

Correct Answer
verified

A solution of potassium hydroxide is in equilibrium with undissolved solute at 45°C.What will happen if the temperature is raised to 50°C? (ΔH_soln = -57.6 kJ/mol)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the molarity of a solution that is 26.0% by mass phosphoric acid (H₃PO₄) and that has a density of 1.155 g/mL?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The water inside the fruit cel...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water.(For water,K_f = 1.86°C/m)

Correct Answer
verified