14.4 Gases: Mixtures and Movements

The rate at which the balloon deflates doesn't depend on the gas it contains

• True

• False

The contribution each gas in a mixture makes to the total pressure is called the ................................. exerted by that gas.

• total pressure

• partial pressure

• atmospheric pressure

In a mixture of gases, the total pressure is the sum of the partial pressures of the gases.

• True

• False

states that, “at constant volume and temperature, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases”.

• Boyle's law

• Dalton's law of partial pressures

• Charles law

The tendency of molecules to move toward areas of lower concentration until the concentration is uniform throughout.

• Condensation.

• Effusion.

• Diffusion.

Gases of lower molar mass diffuse and effuse ................. than gases of higher molar mass.

• faster

• slower

states that “the rate of effusion of a gas is inversely proportional to the square root of the gas's molar mass”.

• Boyle's law.

• Dalton's law of partial pressures.

• Graham's law of effusion.

The rates of effusion of two gases are ...................... to the square roots of their molar masses.

• inversely proportional

• directly proportional

• equal

A mixture of hydrogen gas and oxygen gas exerts a total pressure of 1.5 atm on the walls of its container. If the partial pressure of hydrogen is 1 atm, find the partial pressure of oxygen.

• 0.5 atm

• 2.5 atm

• 0.66 atm

If equal amounts of helium and argon are placed in a porous container and allowed to escape, which gas will escape faster and how much faster?

• Argon

• Helium