Flashcards in Ch. VI Deck (31):
Molecules are farthest apart in a(n)
difficult to compress and have no definite shape
When a liquid changes into a gas, the process is called
When a liquid changes into a solid, the process is called
When a solid changes directly into a gas, the process is called
Which of the following is not composed of particles that exhibit intermolecular forces?
Which of the following solids is likely to require the greatest input of energy to melt?
What intermolecular forces are most significant in accounting for the high boiling point of liquid water relative to other substances of similar molecular weight?
Which of the following interactions is the strongest?
In ethanol (CH3CH2OH), the attractions between neighboring molecules are
hydrogen bonds, dipole-dipole forces, and dispersion forces only
The molecules of liquid water in a beaker are held to each other by
Of CH3OH, H2, HF, and H2O, which molecule(s) can form hydrogen bonds?
CH3OH, HF, and H2O
Which one of the following molecules does NOT form hydrogen bonds?
A solution is a mixture that is
Which of the following pairs of substances is least likely to form a solution?
An ionic compound in a nonpolar solvent
A positive test for iodine is the purple color of a solution of I2 in hexane (C6H14). What type of solute-solvent interaction is the most important in a solution of nonpolar I2 in nonpolar C6H14?
What type of solute-solvent interaction is most important in a solution of calcium chloride (CaCl2) in water?
What type of solute-solvent interaction is most important in a solution of acetic acid (CH3COOH) in water?
Which of the following solutes is most likely to dissolve in octane (C8H18), a compound of gasoline?
CH3 (CH2)4 CH3
Which of the following is not a concept of the kinetic-molecular theory of gases?
The pressure and volume of a gas are inversely related.
According to the kinetic-molecular theory of gases, a gas particle
is tiny compared to the volume occupied by the gas
In collisions between gas particles, the total energy
remains the same
Gas pressure is caused by
gas molecules colliding with vessel walls
Boyle's law states that the pressure of a gas is inversely proportional to its
A gas sample occupies 6 L at 2 atm pressure. At what pressure would the volume be 1.5 L if the temperature remains constant?
In an experiment, as the temperature is changed at constant pressure, the volume of a gas is halved. How is the final temperature related to the initial temperature?
The Kelvin temperature is halved.
One 1-L flask (Flask A) contains no gas, and another 1-L flask (Flask B) contains NO2 gas, both at STP. Flask A contains
less mass but the same number of molecules as Flask B
How many moles are there in 5.6 L of gas at STP?
In the ideal gas equation, PV=nRT, the variable n stands for
the number of moles
At STP, 1 mol of an ideal gas occupies 22.4 L. What volume does 1 mol of an ideal gas occupy at 20 °C and 1.5 atm?