Effusion and Diffusion Concepts

The video tutorial on Digital Chemistry explains the concepts of diffusion and effusion of gases. It begins with real-life examples like perfume spreading and smoke irritation to introduce diffusion, which is the movement of gas molecules from high to low pressure regions to form a homogeneous mixture. The tutorial then explains effusion, where gas molecules escape through a pinhole from high to low pressure regions, using examples like air filling in a tire. The video concludes with a call to action to like and subscribe to the channel.

What is a common example of diffusion in everyday life?

• The flow of electricity

• The sound of a bell

• Filling a tire with air

• The spreading of perfume fragrance

How do gas molecules move during diffusion?

• In a circular motion

• From high pressure to low pressure

• They remain stationary

• From low pressure to high pressure

Which of the following is NOT an example of diffusion?

• Air escaping through a pinhole

• Smoke dispersing in the air

• A tire bursting

• Perfume spreading in a room

What happens to gas molecules inside a tire when it bursts?

• They condense into a liquid

• They diffuse outwards

• They remain inside the tire

• They move from low to high pressure

What is effusion?

• The movement of liquids through a membrane

• The absorption of gases by solids

• The escape of gas molecules through a pinhole

• The mixing of gases to form a homogeneous mixture

During effusion, how do gas molecules move?

• In groups through a large opening

• One by one through a pinhole

• Randomly in all directions

• They do not move

Which process involves gas molecules moving from high to low pressure through a pinhole?

• Osmosis

• Sublimation

• Effusion

• Diffusion

Which example illustrates effusion?

• Air escaping from a balloon through a small hole

• Perfume spreading in a room

• Water boiling

• Smoke filling a room

What causes the smell of food to escape from a sealed plastic bag?

• Diffusion through the bag

• Effusion through small holes

• Condensation inside the bag

• Evaporation of the food

Which process is described as one-way traffic of molecules?

• Radiation

• Convection

• Diffusion

• Effusion