Deck 7: Properties of Solutions Ii: Intermolecular Forces and Colligative Properties

Question 1

Which type of intermolecular force is the dominant force when oxygen is dissolved in water?

A) dipole-dipole
B) dipole-induced dipole
C) hydrogen bond
D) dispersion

Answer 1

dipole-induced dipole

Question 2

Which type of intermolecular force is the dominant force in a CH₃CH₂OH molecule?

A) dipole-dipole
B) dipole-induced dipole
C) hydrogen bond
D) dispersion

Answer 2

hydrogen bond

Question 3

A blood cell is placed in a hypotonic solution. What will happen to the size of the cell in the hypotonic solution?

A) The cell will swell.
B) The cell will shrink.
C) The size of the cell will not change.
Enter the appropriate word(s) to complete the statement.

Answer 3

The cell will swell.

Question 4

Which of the following molecules has the highest boiling point?

A) HF
B) HCl
C) HBr
D) HI

Question 5

Which of the following bonds has the largest dipole?

A) HF
B) HCl
C) HBr
D) HI

Question 6

Which of the following molecules has the highest polarizability?

A) F₂
B) Cl₂
C) Br₂
D) I₂

Question 7

Which of the following has the highest melting point?

A) He
B) Ne
C) Ar
D) Kr

Question 8

Complete the following sentence: Decreasing the surface area of a solid will result in the dissolution process being _______.

Question 9

Which of the following compounds will cause the greatest change in the freezing point of a liquid, assuming that an equal number of molecules are added to each solution?

A) KCN
B) CaF₂
C) Mg(ClO₃)₂
D) C₁₂H₂₂O₁₁

Question 10

In aqueous solution, a sodium ion is attracted to which atom in the water molecule?

A) the oxygen, which is partially positive
B) the oxygen, which is partially negative
C) the hydrogen, which is partially positive
D) the hydrogen, which is partially negative

Question 11

Complete the following sentence: For most compounds, as the temperature decreases, the solubility _______.

Question 12

Calculate the surface area of a sphere with a volume of 1.5 cm³, given the formulas for a sphere: volume = 4/3πr³ and surface area = 4πr².

A) 1.6 cm²
B) 4.5 cm²
C) 6.3 cm²
D) 8.0 cm²

Question 13

Which of the following is not a colligative property?

A) osmotic pressure
B) boiling point elevation
C) freezing point elevation
D) vapor pressure lowering

Question 14

Which of the following molecules has the lowest boiling point?

A) CH₄
B) SiH₄
C) GeH₄
D) SnH₄

Question 15

Which type of intermolecular force is the strongest force?

A) dipole-dipole
B) hydrogen bond
C) induced dipole-induced dipole
D) dispersion

Question 16

Which type of intermolecular force is acting in an H₂O molecule?

A) dipole-dipole
B) hydrogen bond
C) induced dipole-induced dipole
D) dispersion

Question 17

Which of the following molecules will form hydrogen bonds?

A) He
B) O₂
C) CH₄
D) NH₃

Question 18

Which type of intermolecular force is acting in Ne(g)?

A) dipole-dipole
B) hydrogen bond
C) induced dipole-induced dipole
D) dispersion

Question 19

Which type of intermolecular force is acting in a N₂ molecule?

A) dipole-dipole
B) hydrogen bond
C) induced dipole-induced dipole
D) dispersion

Question 20

Which of these molecules has the strongest intermolecular forces?

A) H₂O
B) H₂S
C) H₂Se
D) H₂Te

Question 21

Calculate the osmotic pressure of a solution that contains 14.0 g NH₄NO₃ in 300.0 mL of water at 25.0°C.

Question 22

What is the boiling point of a solution made from 255 g of nonelectrolyte sucrose (molar mass = 342 g/mole) dissolved in 812 mL of water? (The K_bp for water is 0.512°C/m.)

Question 23

Complete the following statement. The lower the surface tension, the _______ the intermolecular forces.

Question 24

Calculate the surface area of a cube with a volume of 2 cm³, given formulas for the cube: volume = length³ and surface area = 6 × length². What percent increase in surface area does a cube have compared with a sphere of the same volume?

A) surface area = ____________
B) Percent increase in surface area = ____________