# What has the highest rate of effusion?

What has the highest rate of effusion? The lighter a gas is, the faster it will effuse; the heavier a gas is, the slower it will effuse. Of all the choices, helium (He) has the lowest molecular weight (atomic weight in this case), so it will have the highest rate of effusion.

Which gas would have the slowest rate of effusion through a pinhole? The hydrogen went the fastest, the oxygen was in the middle, and the difluorodichloromethane had the slowest rate of effusion.

What determines the rate of effusion? The rate of effusion of a gaseous substance is inversely proportional to the square root of its molar mass. Thus the rate at which a molecule, or a mole of molecules, diffuses or effuses is directly related to the speed at which it moves.

What is the effusion rate? Effusion occurs when a gas passes through an opening that is smaller than the mean free path of the particles, that is, the average distance traveled between collisions. Effectively, this means that only one particle passes through at a time.

## What has the highest rate of effusion? – Additional Questions

### Which gas has the lowest rate of effusion?

Explanation: The rate of effusion of the given gases is arranged from highest to lowest effusion rate. Hydrogen molecule has the highest effusion rate and hydrocarbon has the lowest effusion rate.

### Which is an example of effusion?

Effusion is defined as a loss of material across a boundary. A common example of effusion is the loss of gas inside of a balloon over time. The rate at which gases will effuse from a balloon is affected by a number of factors.

### What is an effusion definition?

Listen to pronunciation. (eh-FYOO-zhun) An abnormal collection of fluid in hollow spaces or between tissues of the body. For example, a pleural effusion is a collection of fluid between the two layers of membrane covering the lungs.

### What does effusion mean in chemistry?

Effusion is the movement of a gas through a tiny hole into a vacuum. We want to know the rate of effusion, which is how much gas moves through the hole per unit time. We assume that the gas particles don’t bump into each other while they move through the hole (this means it’s a narrow hole in a thin wall).

### What is effusion and diffusion?

Effusion in simple terms is the ability of gas to travel through a small opening. Diffusion is the ability of gases to mix with each other usually in the absence of a barrier. Effusion occurs when the size or aperture of the hole is smaller than the mean free path of the molecules.

### Which gas has the highest rate of diffusion?

As per Graham’s law, the rate of effusion or diffusion is inversely proportional to the square root of its molecular weight. Consequently, the gas with the least molecular weight effuses the fastest hence, helium gas has a higher rate of diffusion compared to nitrogen or oxygen.

### Why is effusion faster than diffusion?

During the process of effusion, the particles tend to move faster than diffusion since there is no collision occurring between the molecules. The rate of diffusion is limited and depends on the size and the kinetic energy of the other particles. Effusion happens or is facilitated when there is a difference in pressure.

### Why diffusion is faster than diffusion?

The distance between the constituent particles in gases becomes greater than in liquids, resulting in diffusion faster in gases than in liquids. Therefore, gas particles have higher kinetic energy and travel more rapidly. Therefore, diffusion of gases is much quicker than liquid diffusion.

### Which of the following will diffuse the fastest?

Gases diffuse the fastest as the particles in gases move very quickly in all directions.