Colligative Properties: Online Learning Quizzes for Chemistry

Question 1

Boiling point elevation is a colligative property caused by the presence of:

Accepted Answer

Solute particles in the solvent.

Answer

Increased vapor pressure of the solution.

Answer

Decreased vapor pressure of the solution.

Answer

Increased boiling point of the pure solvent.

Question 2

Which of the following solutions would have the highest osmotic pressure?

Accepted Answer

A 0.1 M solution of sodium chloride (NaCl)

Answer

A 0.1 M solution of glucose (C6H12O6)

Answer

A 0.1 M solution of sucrose (C12H22O11)

Answer

A 0.1 M solution of urea (CH4N2O)

Question 3

Colligative properties:

Accepted Answer

Depend on the number of particles in solution, regardless of their type.

Answer

Depend on the type of particles in solution, regardless of their number.

Answer

Depend on both the number and type of particles in solution.

Answer

Are independent of the concentration of the solution.

Question 4

Which factor does NOT influence osmotic pressure?

Accepted Answer

Surface area of the membrane

Answer

Concentration of the solution

Answer

Temperature

Answer

Nature of the solute

Question 5

Identify the incorrect statement about colligative properties.

Accepted Answer

They are independent of temperature.

Answer

They depend on the number of solute particles, not their identity.

Answer

They can be used to determine the molar mass of unknown solutes.

Answer

They are observed in both ideal and non-ideal solutions.

Question 6

How does the concentration of solute particles affect colligative properties?

Accepted Answer

Higher concentration leads to higher colligative properties.

Answer

Lower concentration leads to higher colligative properties.

Answer

Concentration has no impact on colligative properties.

Question 7

Which of the following is NOT a colligative property?

Accepted Answer

Enthalpy of vaporization

Answer

Vapor pressure lowering

Answer

Boiling point elevation

Answer

Freezing point depression

Question 8

According to Raoult's law, the vapor pressure of a solution is what fraction of the vapor pressure of the pure solvent?

Accepted Answer

Less than

Answer

Equal to

Answer

Greater than

Answer

Independent of

Question 9

Which of the following factors primarily affects the magnitude of colligative properties?

Accepted Answer

Concentration of solute particles

Answer

Nature of the solute

Answer

Temperature

Answer

Volume of the solution

Question 10

Boiling point elevation is directly proportional to the:

Accepted Answer

Molality of the solution

Answer

Molarity of the solution

Answer

Mass of the solute

Answer

Volume of the solution

Question 11

Osmotic pressure is defined as the:

Accepted Answer

Pressure required to prevent the flow of solvent across a semipermeable membrane

Answer

Pressure required to increase the vapor pressure of a solution

Answer

Pressure required to lower the freezing point of a solution

Answer

Pressure required to raise the boiling point of a solution

Question 12

Which of the following solutes would produce the greatest osmotic pressure when dissolved in water at the same molarity?

Accepted Answer

CaCl2

Answer

NaCl

Answer

Glucose

Answer

Sucrose

Question 13

The van't Hoff factor for a compound that dissociates into two ions in solution is:

Accepted Answer

2

Answer

1

Answer

3

Answer

Depends on the concentration of the electrolyte

Question 14

Which of the following solutions will have the highest boiling point?

Accepted Answer

0.1 m CaCl2

Answer

0.1 m NaCl

Answer

0.1 m glucose

Answer

0.1 m sucrose

Question 15

Which property is NOT a colligative property of solutions?

Accepted Answer

Density

Answer

Vapor pressure lowering

Answer

Boiling point elevation

Answer

Freezing point depression

Question 16

How does increasing the concentration of solute particles affect the vapor pressure of a solution?

Accepted Answer

Decreases vapor pressure

Answer

Increases vapor pressure

Answer

No change in vapor pressure

Question 17

What is the relationship between the osmotic pressure of a solution and its concentration?

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

No relationship

Question 18

Which quantity is adjusted for by the van't Hoff factor in colligative property calculations?

Accepted Answer

Number of ions produced by a solute

Answer

Mass of the solute

Answer

Volume of the solution

Question 19

Which application employs the colligative property of freezing point depression?

Accepted Answer

Antifreeze in car engines

Answer

Air conditioners

Answer

Reverse osmosis water purification

Question 20

Which of the following statements correctly defines colligative properties of solutions?

Accepted Answer

They depend solely on the concentration of solute particles, not their identity.

Answer

They are affected by both the concentration and the chemical nature of the solute.

Answer

They are only observed in solutions with very high solute concentrations.

Answer

They involve changes in the chemical composition of the solution.

Question 21

Which of the following changes will result in the greatest elevation of the boiling point?

Accepted Answer

Dissolving 1 mole of CaCl2 in 1 kg of water

Answer

Dissolving 1 mole of glucose in 1 kg of water

Answer

Dissolving 1 mole of NaCl in 1 kg of water

Answer

Dissolving 1 mole of urea in 1 kg of water

Question 22

Compared to the freezing point of the pure solvent, the freezing point of a solution is:

Accepted Answer

Lower

Answer

Higher

Answer

Equal

Answer

Unpredictable

Question 23

Which solution will have the highest osmotic pressure?

Accepted Answer

1 M NaCl solution

Answer

0.1 M NaCl solution

Answer

0.1 M glucose solution

Answer

1 M glucose solution

Question 24

Which of the following is a non-colligative property?

Accepted Answer

Viscosity

Answer

Vapor pressure lowering

Answer

Boiling point elevation

Answer

Osmotic pressure

Question 25

Which of the following is NOT a colligative property of a solution?

Accepted Answer

Entropy change

Answer

Osmotic pressure

Answer

Vapor pressure lowering

Answer

Boiling point elevation

Question 26

Which of the following substances has the highest van't Hoff factor?

Accepted Answer

CaCl_2

Answer

Sucrose

Answer

Glucose

Answer

NaCl

Question 27

Which of the following solutions will have the lowest osmotic pressure?

Accepted Answer

0.10 m glucose

Answer

0.10 m AlCl_3

Answer

0.10 m NaCl

Answer

0.10 m CaCl_2

Question 28

Osmotic pressure is the pressure required to:

Accepted Answer

Equalize the concentration of solute particles on both sides of a semipermeable membrane

Answer

Decrease the freezing point of a solution

Answer

Increase the boiling point of a solution

Question 29

Colligative properties can be used to:

Accepted Answer

Determine the molar mass of an unknown substance

Answer

Calculate the density of a solution

Answer

Predict the behavior of non-ideal solutions

Question 30

Colligative properties are most useful for studying the behavior of:

Accepted Answer

Dilute solutions

Answer

Ionic solutions

Answer

Electrolytes

Answer

Concentrated solutions

Question 31

For a compound that undergoes complete dissociation in water, the van't Hoff factor (i) is:

Accepted Answer

Equal to the number of ions produced per formula unit

Answer

Cannot be determined from the given information

Answer

Equal to the molarity of the solution

Answer

Always equal to 1

Question 32

Which property is NOT a colligative property?

Accepted Answer

Enthalpy of hydration

Answer

Boiling point elevation

Answer

Vapor pressure lowering

Answer

Freezing point depression

Question 33

Which of the following statements about colligative properties is incorrect?

Accepted Answer

Colligative properties depend on the identity of the solute.

Answer

Colligative properties are intensive properties.

Answer

Colligative properties are proportional to the concentration of solute particles.

Question 34

Which of the following is a unit of osmotic pressure?

Accepted Answer

Atmospheres (atm)

Answer

Degrees Celsius (°C)

Answer

Joules (J)

Answer

Moles per liter (mol/L)

Question 35

A 0.200 molal solution of glucose in water is separated from pure water by a semipermeable membrane. Water will move:

Accepted Answer

From pure water to the solution

Answer

From the solution to pure water

Answer

No net movement of water

Answer

The direction of water movement cannot be determined based on the provided information.

Question 36

Which of the following is NOT a colligative property?

Accepted Answer

Ionic strength

Answer

Freezing point depression

Answer

Vapor pressure lowering

Answer

Boiling point elevation

Question 37

Colligative properties depend on:

Accepted Answer

Concentration of solute particles

Answer

Temperature

Answer

Identity of solute particles

Answer

Solvent used

Question 38

Which of the following properties is NOT affected solely by the concentration of solute particles in a solution?

Accepted Answer

Viscosity

Answer

Freezing point depression

Answer

Osmotic pressure

Answer

Boiling point elevation

Question 39

Why does a solution of 0.1 mol glucose in 1 kg of water have a higher boiling point than pure water?

Accepted Answer

The presence of solute particles increases the boiling point.

Answer

Glucose releases heat when it dissolves in water.

Answer

The vapor pressure of the solution is increased.

Answer

The freezing point of the solution is lowered.

Question 40

Which solution will have the lowest freezing point?

Accepted Answer

0.2 molal NaCl solution

Answer

0.1 molal glucose solution

Answer

0.1 molal sucrose solution

Answer

0.2 molal urea solution

Question 41

What type of molecules can pass through a semipermeable membrane?

Accepted Answer

Solvent molecules only

Answer

No molecules can pass through

Answer

Both solvent and solute molecules

Answer

Solute molecules only

Question 42

Osmotic pressure is directly proportional to which of the following?

Accepted Answer

The molar concentration of the solute

Answer

The volume of the solution

Answer

The temperature of the solution

Answer

The density of the solution

Question 43

Which factor does NOT directly influence the colligative properties of a solution?

Accepted Answer

The chemical nature of the solute

Answer

The temperature of the solution

Answer

The nature of the solvent

Answer

The concentration of the solute particles

Question 44

Two solutions, A and B, have the same molal concentration. Solution A contains a non-electrolyte, while solution B contains an electrolyte that dissociates into three ions. Which solution will have a higher osmotic pressure?

Accepted Answer

Solution B

Answer

Solution A

Answer

Both solutions will have the same osmotic pressure

Answer

Cannot be determined from the given information

Question 45

A student dissolves 10 g of an unknown compound in 100 g of water. The freezing point of the solution is depressed by 0.512 °C. The Kf for water is 1.86 °C/molal. What is the approximate molecular weight of the unknown compound?

Accepted Answer

190 g/mol

Answer

95 g/mol

Answer

380 g/mol

Answer

512 g/mol

Question 46

Which of the following is NOT a colligative property?

Accepted Answer

Density

Answer

Freezing point depression

Answer

Osmotic pressure

Answer

Boiling point elevation

Question 47

A solution containing 0.10 mol of NaCl in 1.0 kg of water has a boiling point of 100.52 °C. What is the van't Hoff factor for NaCl?

Accepted Answer

2

Answer

4

Answer

3

Answer

1

Question 48

Which of the following solutions will have the highest osmotic pressure at 25 °C?

Accepted Answer

0.10 M NaCl

Answer

0.05 M glucose

Answer

0.10 M sucrose

Answer

0.20 M urea

Question 49

A solution with a freezing point of -3.6 °C contains an unknown solute. If the van't Hoff factor for the solute is 2, what is the molality of the solution?

Accepted Answer

0.6

Answer

1.2

Answer

2.4

Answer

0.3

Question 50

Which of the following statements is TRUE about vapor pressure lowering?

Accepted Answer

It is directly proportional to the concentration of solute particles.

Answer

It is inversely proportional to the molarity of the solution.

Answer

It is affected by the size of the solute particles.

Question 51

A solution containing 15.0 g of glucose (C₆H₁₂O₆) in 250.0 g of water has a boiling point of 100.51 °C. What is the molality of the solution?

Accepted Answer

0.10

Answer

0.40

Answer

0.05

Answer

0.20

Question 52

Which of the following solutions will have the lowest freezing point?

Accepted Answer

0.10 M KCl

Answer

0.10 M sucrose

Answer

0.10 M CaCl₂

Answer

0.10 M glucose

Question 53

What is the osmotic pressure of a solution containing 0.20 mol of NaCl in 1.0 L of water at 300 K?

Accepted Answer

12.0 atm

Answer

6.0 atm

Answer

18.0 atm

Answer

24.0 atm

Question 54

A solution containing equal masses of NaCl and glucose in 1.0 kg of water has a freezing point of -3.6 °C. What is the mass of NaCl in the solution?

Accepted Answer

29.2 g

Answer

87.6 g

Answer

14.6 g

Answer

43.8 g