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# How does diffusion relate to equilibrium?

## How does diffusion relate to equilibrium?

Explanation: Diffusion means the movement of particles from an area of high concentration to an area of low concentration. Equilibrium means that a balanced situation has been achieved (particles are evenly spread out). Dynamic means that things continue to happen – the particles don’t stop moving!

## Does diffusion help reach equilibrium?

Diffusion involves the movement of particles from higher concentration regions to where it is less concentrated. When the solute concentration is equal between the two regions, the movement of molecules will be at the same rate on each side of the cell membrane; this means that equilibrium has been reached.

What happens to molecular diffusion when equilibrium is reached?

At equilibrium, movement of molecules does not stop. At equilibrium, there is equal movement of materials in both directions. If a molecule can pass freely through a cell membrane, it will cross the membrane by diffusion (Figure below).

### How does equilibrium relate to diffusion and osmosis?

In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.

### How is equilibrium in diffusion achieved in this experiment?

Equilibrium is reached when there is a uniform distribution of solvent particles or when there is an equal concentration of solute on each side of a membrane.

What happens when equilibrium is reached?

When a system has reached equilibrium, no further changes in the reactant and product concentrations occur; the reactions continue to occur, but at equivalent rates. 5. The concept of equilibrium does not imply equal concentrations, though it is possible.

#### When diffusion has reached equilibrium we say that the net movement of the molecules is zero?

When a molecule is diffusing, the molecule moves and when it reaches equilibrium, it means that the movement of the molecule from the higher concentration region to lower concentration stops but the molecules are always in a random movement about their fixed position.

#### Why does diffusion continue to occur even after equilibrium has been reached?

Because diffusion depends upon random particle movements, substances diffuse across membranes without requiring the cell to use energy. Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions.

Which results in an increase in the rate of diffusion?

The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.

## Why does diffusion occur?

Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration . Diffusion occurs in liquids and gases when their particles collide randomly and spread out.

## When equilibrium is reached during diffusion particles stay still and will not move?

Even when equilibrium is reached, particles do not stop moving across the cell membrane. Although it may seem as if the concentrations are not changing, nearly equal numbers of particles cross the membrane in both directions. This means that there is no net change in the concentration of the substances.

Why is diffusion so important in biology?

Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products.