IMF's, Liquids, and Solids

Question 1

Which of the following substances exhibits the strongest intermolecular forces of attraction?

Accepted Answer

CH3OH

Question 2

The vapor pressure graph of an unknown liquid is shown. Which statement(s) is/are true?

Accepted Answer

All of the above

Question 3

Surface tension in a liquid is due to the fact that

Accepted Answer

all of the above

Question 4

Picture

Accepted Answer

100 x (34.1/18.8)

Question 5

The heat of sublimation of a compound equals

Accepted Answer

heat of fusion plus heat of vaporization

Question 6

Picture

Accepted Answer

ICl has a dipole moment (polar) and Br does not (nonpolar).

Question 7

Picture

Accepted Answer

Avg molecule KE is higher so more molecules enter gas state.

Question 8

Which of the following statements describes a substance above its critical point?

Accepted Answer

the vapor and liquid phase become indistinguishable

Question 9

Which of the following indicates very strong intermolecular forces of attraction in a liquid?

Accepted Answer

A very low vapor pressure.

Question 10

Which one of the following is linked with the correct intermolecular force of attraction?

Accepted Answer

NH3 dipole-dipole

Question 11

At what point on the phase diagram do solid and liquid exist at equilibrium?

Accepted Answer

B

Question 12

Which of the following compounds shows an abnormal boiling point due to hydrogen bonding?

Accepted Answer

CH3NH2

Question 13

Picture

Accepted Answer

N

Question 14

The normal boiling point of a liquid

Accepted Answer

temperature at which the vapor pressure is 1 atm.

Question 15

Which of the following has the lowest boiling point?

Accepted Answer

H2S

Question 16

Which of the following will change the equilibrium vapor pressure of a liquid?

Accepted Answer

I only

Question 17

Picture

Accepted Answer

0.759 kJ

Question 18

Which one of the following as solids has a crystal structure containing discrete molecules?

Accepted Answer

hydrogen

Question 19

With which type of substances do London dispersion forces play the most significant role?

Accepted Answer

non-polar molecules

Question 20

What occurs when the substance below is heated from 100° C to 120 °C at 3 atm pressure?

Accepted Answer

it boils

Question 21

Dipole-dipole attractions play the largest role as the intermolecular attraction in which?

Accepted Answer

HCl

Question 22

Which substance below exhibits the weakest IMFs?

Accepted Answer

CO2

Question 23

Which of the following would be expected to have the highest heat of vaporization?

Accepted Answer

H2O

Question 24

At what temperature will the liquid boil if the air pressure is reduced to 380 mmHg?

Accepted Answer

50°C

Question 25

During the condensing of a liquid, the kinetic energy _____ and the potential energy ______.

Accepted Answer

stays the same, decreases

Question 26

For which substance would you predict the highest heat of vaporization?

Accepted Answer

NaCl

IMF's, Liquids, and Solids

Questions 26

IMF's, Liquids, and Solids

Questions 26