Question 1

The solubility of a solid always increases with increasing solvent temperature.

Accepted Answer

A) True 
 B)False

Question 2

A saturated solution

Accepted Answer

A)  contains more solute than solvent.
B)  contains more solvent than solute.
C)  contains equal moles of solute and solvent.
D)  contains the maximum amount of solute that will dissolve in that solvent at that temperature.
E)  contains a solvent with only sigma bonds and no pi bonds (i.e. only single bonds, with no double or triple bonds) .F) C) and E)
G) C) and D)

Question 3

How many liters of ethylene glycol antifreeze (C2H6O2)would you add to your car radiator containing 15.0 L of water if you needed to protect your engine to -17.8°C? (The density of ethylene glycol is 1.1 g/mL. For water, Kf = 1.86°C/m.)

Accepted Answer

Question 4

In how many grams of water should 25.31 g of potassium nitrate (KNO3) be dissolved to prepare a 0.1982 m solution?

Accepted Answer

A)  250.0 g
B)  792.0 g
C)  1,000. g
D)  1,263 g
E)  7,917 gF) A) and B)
G) A) and C)

Question 5

Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true?

Accepted Answer

A)  The vapor pressure of the solution is always greater than the vapor pressure of the pure solvent.
B)  The boiling point of the solution is always greater than the boiling point of the pure solvent.
C)  The freezing point of the solution is always greater than the freezing point of the pure solvent.D) A) and B)
E) All of the above

Question 6

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) A) and C)
F) All of the above

Question 7

How many grams of water are needed to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Accepted Answer

A)  769 g
B)  36.2 g
C)  100. g
D)  0.157 g
E)  157 gF) A) and B)
G) C) and D)

Question 8

Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution is 5.144°C. Pure benzene freezes at 5.444°C and has a Kf of 5.12°C/m. What is the molar mass of thyroxine?

Accepted Answer

Question 9

Which of the following aqueous solutions has the lowest freezing point?

Accepted Answer

A)  0.18 m KCl
B)  0.15 m Na2SO4
C)  0.12 m Ca(NO3) 2
D)  pure water
E)  0.20 m C2H6O2 (ethylene glycol) F) C) and E)
G) D) and E)

Exam 13: Physical Properties of Solutions

In how many grams of water should 25.31 g of potassium nitrate (KNO₃) be dissolved to prepare a 0.1982 m solution?

Correct Answer
verified

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

Correct Answer
verified

Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true?

Correct Answer
verified

Correct Answer
verified

The solubility of a solid always increases with increasing solvent temperature.

Correct Answer
verified

A saturated solution

Correct Answer
verified

How many liters of ethylene glycol antifreeze (C₂H₆O₂)would you add to your car radiator containing 15.0 L of water if you needed to protect your engine to -17.8°C? (The density of ethylene glycol is 1.1 g/mL. For water, K_f = 1.86°C/m.)

Correct Answer
verified

Which of the following aqueous solutions has the lowest freezing point?

Correct Answer
verified

How many grams of water are needed to dissolve 27.8 g of ammonium nitrate NH₄NO₃ in order to prepare a 0.452 m solution?

Correct Answer
verified

Exam 13: Physical Properties of Solutions

In how many grams of water should 25.31 g of potassium nitrate (KNO3) be dissolved to prepare a 0.1982 m solution?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The solubility of a solid always increases with increasing solvent temperature.

Correct AnswerverifiedShow Answer

A saturated solution

Correct AnswerverifiedShow Answer

How many liters of ethylene glycol antifreeze (C2H6O2)would you add to your car radiator containing 15.0 L of water if you needed to protect your engine to -17.8°C? (The density of ethylene glycol is 1.1 g/mL. For water, Kf = 1.86°C/m.)

Correct AnswerverifiedShow Answer

Which of the following aqueous solutions has the lowest freezing point?

Correct AnswerverifiedShow Answer

How many grams of water are needed to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Correct AnswerverifiedShow Answer

In how many grams of water should 25.31 g of potassium nitrate (KNO₃) be dissolved to prepare a 0.1982 m solution?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many liters of ethylene glycol antifreeze (C₂H₆O₂)would you add to your car radiator containing 15.0 L of water if you needed to protect your engine to -17.8°C? (The density of ethylene glycol is 1.1 g/mL. For water, K_f = 1.86°C/m.)

Correct Answer
verified

Correct Answer
verified

How many grams of water are needed to dissolve 27.8 g of ammonium nitrate NH₄NO₃ in order to prepare a 0.452 m solution?

Correct Answer
verified