Diffusion, Effusion, and Gas Stoichiometry

Gas escaping from a tiny opening in a football is an example of

• Diffusion

• Effusion

Lighter gases have a ________________ rate of effusion.

• faster 
• slower
• rate of effusion does not depend on mass.

The picture below is an example of _________________.

• osmosis

• effusion

• diffusion

Which will travel faster: oxygen gas or helium gas?

• O₂

• He

Effusion is

• used to describe the combustibility of a gas.
• ability of a gas to escape through a tiny opening
• what occurs after diffusion.
• the ability of a gas to mix with other gases.

why would O₂ effuse faster than CO₂ in the same room

• because O₂ has more energy

• because CO₂ has a greater molar mass

• because oxygen has a higher temperature

• they will effuse the same because the temperature is fixed

Which of the following factors does NOT affect the diffusion of gases?

• Temperature

• Pressure

• Color of the gas

• Molar mass

What is the main difference between diffusion and effusion?

• Diffusion occurs through a small hole, while effusion occurs in open space.

• Effusion occurs through a small hole, while diffusion occurs in open space.

• Diffusion involves liquid particles, while effusion involves gas particles.

• Effusion involves liquid particles, while diffusion involves gas particles.

According to Graham's Law, if Gas A has a molar mass of 4 g/mol and Gas B has a molar mass of 16 g/mol, which gas will effuse faster?

• Gas A

• Gas B

• Both gases will effuse at the same rate.

• It depends on the temperature.

What happens to the rate of diffusion if the temperature of a gas increases?

• The rate of diffusion decreases.

• The rate of diffusion remains the same.

• The rate of diffusion increases.

• The rate of diffusion becomes zero.

Tags

NGSS.MS-PS1-4