Question 1

Which of the following is not a colligative property?

Accepted Answer

A)  Vapor pressure lowering
B)  Atmospheric pressure
C)  Boiling point elevation
D)  Osmotic pressure
E)  Freezing point depressionF) A) and B)
G) B) and C)

Question 2

At 10°C one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure.What is the Henry's law constant of Cl2 in water? (R = 0.0821 atm • L • mol-1• K-1 )

Accepted Answer

A)  3.8 mol • L-1• atm-1
B)  0.043 mol • L-1• atm-1
C)  36 mol • L-1• atm-1
D)  3.1 mol • L-1• atm-1
E)  0.13 mol • L-1• atm-1F) C) and D)
G) A) and B)

Question 3

A solution is 40.00% by volume benzene (C6H6) in carbon tetrachloride at 20°C.The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm3; the vapor pressure of pure carbon tetrachloride is 91.32 mmHg and its density is 1.5940 g/cm3.If this solution is ideal,its total vapor pressure at 20°C is

Accepted Answer

A)  84.64 mmHg.
B)  84.30 mmHg.
C)  82.96 mmHg.
D)  81.63 mmHg.
E)  165.93 mmHg.F) A) and E)
G) A) and D)

Question 4

What is the name given to a solution that contains more solute than it has the capacity to dissolve?

Accepted Answer

A)  Unsaturated
B)  Saturated
C)  Soluted
D)  Supersaturated
E)  OversaturatedF) A) and D)
G) A) and C)

Question 5

Which is true regarding the solvation of a solute in a solvent?

Accepted Answer

A)  Separation of solute molecules from one another is an endothermic process,and separation of solvent molecules from one another is an exothermic process.
B)  Separation of solute molecules from one another is an exothermic process,and separation of solvent molecules from one another is an endothermic process.
C)  Separation of solute molecules from one another,and separation of solvent molecules from one another,are both endothermic processes.
D)  Separation of solute molecules from one another,and separation of solvent molecules from one another,are both exothermic processes.
E)  Separation of solute molecules from one another,and separation of solvent molecules from one another,both result in a decrease in entropy.F) D) and E)
G) C) and E)

Question 6

What is the molarity of a 17.0% by mass solution of sodium acetate,NaC2H3O2 (82.0g/mol) ,in water? The density of the solution is 1.09 g/mL.

Accepted Answer

A)  0.170 M
B)  0.207 M
C)  2.07 M
D)  2.26 M
E)  1.90 MF) D) and E)
G) A) and D)

Question 7

Which of these compounds is a strong electrolyte?

Accepted Answer

A)  H2O
B)  N2
C)  CH3COOH (acetic acid) 
D)  C2H6O (ethanol) 
E)  KOHF) A) and B)
G) B) and E)

Question 8

In the following diagrams,the black circles represent a solute in solution.Which diagram represents a saturated solution?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) A) and E)

Question 9

A solution that contains 55.0 g of ascorbic acid (vitamin C) in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol) of the solute. (For water,Kf = 1.86°C/m)

Accepted Answer

A)  1.26 g/mol
B)  10.9 g/mol
C)  43.6 g/mol
D)  175 g/mol
E)  277 g/molF) None of the above
G) All of the above

Question 10

Which is immiscible with water?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) C) and D)
G) A) and B)

Question 11

A solution containing 0.102 g of an unknown compound dissolved in 100.mL of water has an osmotic pressure of 28.1 mmHg at 20.°C.What is the molar mass of the compound? (R = 0.08206 L • atm/K • mol,1 atm = 760 mmHg)

Accepted Answer

A)  663 g/mol
B)  0.872 g/mol
C)  1.15 g/mol
D)  727 g/mol
E)  1.10 × 102 g/molF) A) and E)
G) B) and D)

Question 12

An "ideal solution" is a solution that obeys Raoult's law.

Accepted Answer

A) True 
 B)False

Question 13

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Accepted Answer

A)  0.0615 kg
B)  0.100 kg
C)  0.177 kg
D)  0.768 kg
E)  1.30 kgF) A) and B)
G) B) and D)

Question 14

The solubility of nitrogen gas in water at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10-4 mol/L.What is the value of the Henry's law constant in mol L-1• atm-1?

Accepted Answer

A)  6.8 × 10-4 mol L-1• atm-1
B)  4.7 × 10-4 mol L-1• atm-1
C)  3.2 × 10-4 mol L-1• atm-1
D)  9.0 × 10-7 mol L-1• atm-1
E)  1.5 × 103 mol L-1• atm-1F) None of the above
G) A) and B)

Question 15

When 12.1 g of the sugar sucrose (a nonelectrolyte) are dissolved in exactly 800 g of water,the solution has a freezing point of -0.082°C.What is the molar mass of sucrose? (Kf of water is 1.86°C/m.)

Accepted Answer

A)  426 g/mol
B)  99.2 g/mol
C)  178 g/mol
D)  266 g/mol
E)  343 g/molF) C) and E)
G) A) and D)

Question 16

The mole fraction of potassium nitrate in an aqueous solution is 0.0194.The solution's density is 1.0627 g/mL.What is the molarity of KNO3 in the solution?

Accepted Answer

A)  0.0194 M
B)  0.981 M
C)  1.05 M
D)  1.96 M
E)  19.4 MF) B) and D)
G) A) and E)

Question 17

What is defined as the selective passage of solvent molecules through a porous membrane from a more dilute solution to a more concentrated solution?

Accepted Answer

A)  Permeability
B)  Semipermeability
C)  Osmotic pressure
D)  Osmosis
E)  Vapor pressureF) B) and E)
G) A) and B)

Question 18

______________ is the term used for a water loving substance.

Accepted Answer

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

Question 19

What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C3H7OH) dissolved in enough water to make 500.mL of solution at 27°C? (R = 0.08206 L • atm/K • mol)

Accepted Answer

A)  9.7 atm
B)  33.7 atm
C)  0.4 atm
D)  5.6 atm
E)  11.2 atmF) A) and C)
G) B) and C)

Question 20

Which is defined as the maximum amount of solute that will dissolve in a given quantity of solvent at a specific temperature?

Accepted Answer

A)  precipitation
B)  combustion
C)  solubility
D)  super saturation
E)  dilutionF) A) and D)
G) D) and E)

Exam 13: Physical Properties of Solutions

Correct Answer
verified

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH₄NO₃ in order to prepare a 0.452 m solution?

Correct Answer
verified

What is the molarity of a 17.0% by mass solution of sodium acetate,NaC₂H₃O₂ (82.0g/mol) ,in water? The density of the solution is 1.09 g/mL.

Correct Answer
verified

Which of these compounds is a strong electrolyte?

Correct Answer
verified

At 10°C one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure.What is the Henry's law constant of Cl₂ in water? (R = 0.0821 atm • L • mol^-1• K^-1 )

Correct Answer
verified

What is defined as the selective passage of solvent molecules through a porous membrane from a more dilute solution to a more concentrated solution?

Correct Answer
verified

In the following diagrams,the black circles represent a solute in solution.Which diagram represents a saturated solution?

Correct Answer
verified

An "ideal solution" is a solution that obeys Raoult's law.

Correct Answer
verified

The mole fraction of potassium nitrate in an aqueous solution is 0.0194.The solution's density is 1.0627 g/mL.What is the molarity of KNO₃ in the solution?

Correct Answer
verified

Which of the following is not a colligative property?

Correct Answer
verified

What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C₃H₇OH) dissolved in enough water to make 500.mL of solution at 27°C? (R = 0.08206 L • atm/K • mol)

Correct Answer
verified

A solution containing 0.102 g of an unknown compound dissolved in 100.mL of water has an osmotic pressure of 28.1 mmHg at 20.°C.What is the molar mass of the compound? (R = 0.08206 L • atm/K • mol,1 atm = 760 mmHg)

Correct Answer
verified

A solution that contains 55.0 g of ascorbic acid (vitamin C) in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol) of the solute. (For water,K_f = 1.86°C/m)

Correct Answer
verified

Which is true regarding the solvation of a solute in a solvent?

Correct Answer
verified

The solubility of nitrogen gas in water at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10^-4 mol/L.What is the value of the Henry's law constant in mol L^-1• atm^-1?

Correct Answer
verified

What is the name given to a solution that contains more solute than it has the capacity to dissolve?

Correct Answer
verified

Which is defined as the maximum amount of solute that will dissolve in a given quantity of solvent at a specific temperature?

Correct Answer
verified

______________ is the term used for a water loving substance.

Correct Answer
verified

When 12.1 g of the sugar sucrose (a nonelectrolyte) are dissolved in exactly 800 g of water,the solution has a freezing point of -0.082°C.What is the molar mass of sucrose? (K_f of water is 1.86°C/m.)

Correct Answer
verified

Which is immiscible with water?

Correct Answer
verified

Exam 13: Physical Properties of Solutions

Correct AnswerverifiedShow Answer

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Correct AnswerverifiedShow Answer

What is the molarity of a 17.0% by mass solution of sodium acetate,NaC2H3O2 (82.0g/mol) ,in water? The density of the solution is 1.09 g/mL.

Correct AnswerverifiedShow Answer

Which of these compounds is a strong electrolyte?

Correct AnswerverifiedShow Answer

At 10°C one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure.What is the Henry's law constant of Cl2 in water? (R = 0.0821 atm • L • mol-1• K-1 )

Correct AnswerverifiedShow Answer

What is defined as the selective passage of solvent molecules through a porous membrane from a more dilute solution to a more concentrated solution?

Correct AnswerverifiedShow Answer

In the following diagrams,the black circles represent a solute in solution.Which diagram represents a saturated solution?

Correct AnswerverifiedShow Answer

An "ideal solution" is a solution that obeys Raoult's law.

Correct AnswerverifiedShow Answer

The mole fraction of potassium nitrate in an aqueous solution is 0.0194.The solution's density is 1.0627 g/mL.What is the molarity of KNO3 in the solution?

Correct AnswerverifiedShow Answer

Which of the following is not a colligative property?

Correct AnswerverifiedShow Answer

What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C3H7OH) dissolved in enough water to make 500.mL of solution at 27°C? (R = 0.08206 L • atm/K • mol)

Correct AnswerverifiedShow Answer

A solution containing 0.102 g of an unknown compound dissolved in 100.mL of water has an osmotic pressure of 28.1 mmHg at 20.°C.What is the molar mass of the compound? (R = 0.08206 L • atm/K • mol,1 atm = 760 mmHg)

Correct AnswerverifiedShow Answer

A solution that contains 55.0 g of ascorbic acid (vitamin C) in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol) of the solute. (For water,Kf = 1.86°C/m)

Correct AnswerverifiedShow Answer

Which is true regarding the solvation of a solute in a solvent?

Correct AnswerverifiedShow Answer

The solubility of nitrogen gas in water at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10-4 mol/L.What is the value of the Henry's law constant in mol L-1• atm-1?

Correct AnswerverifiedShow Answer

What is the name given to a solution that contains more solute than it has the capacity to dissolve?

Correct AnswerverifiedShow Answer

Which is defined as the maximum amount of solute that will dissolve in a given quantity of solvent at a specific temperature?

Correct AnswerverifiedShow Answer

______________ is the term used for a water loving substance.

Correct AnswerverifiedShow Answer

When 12.1 g of the sugar sucrose (a nonelectrolyte) are dissolved in exactly 800 g of water,the solution has a freezing point of -0.082°C.What is the molar mass of sucrose? (Kf of water is 1.86°C/m.)

Correct AnswerverifiedShow Answer

Which is immiscible with water?

Correct AnswerverifiedShow Answer

Correct Answer
verified

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH₄NO₃ in order to prepare a 0.452 m solution?

Correct Answer
verified

What is the molarity of a 17.0% by mass solution of sodium acetate,NaC₂H₃O₂ (82.0g/mol) ,in water? The density of the solution is 1.09 g/mL.

Correct Answer
verified

Correct Answer
verified

At 10°C one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure.What is the Henry's law constant of Cl₂ in water? (R = 0.0821 atm • L • mol^-1• K^-1 )

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The mole fraction of potassium nitrate in an aqueous solution is 0.0194.The solution's density is 1.0627 g/mL.What is the molarity of KNO₃ in the solution?

Correct Answer
verified

Correct Answer
verified

What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C₃H₇OH) dissolved in enough water to make 500.mL of solution at 27°C? (R = 0.08206 L • atm/K • mol)

Correct Answer
verified

Correct Answer
verified

A solution that contains 55.0 g of ascorbic acid (vitamin C) in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol) of the solute. (For water,K_f = 1.86°C/m)

Correct Answer
verified

Correct Answer
verified

The solubility of nitrogen gas in water at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10^-4 mol/L.What is the value of the Henry's law constant in mol L^-1• atm^-1?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

When 12.1 g of the sugar sucrose (a nonelectrolyte) are dissolved in exactly 800 g of water,the solution has a freezing point of -0.082°C.What is the molar mass of sucrose? (K_f of water is 1.86°C/m.)

Correct Answer
verified

Correct Answer
verified