Question: What Factors Affect The Rate Of Diffusion Quizlet?

Can diffusion occur in solids?

For diffusion to work, the particles must be able to move around.

This means that diffusion does not happen in solids – the particles in a solid can only vibrate and cannot move from place to place..

What factors affect rate of diffusion?

Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.

What two variables affect the rate of diffusion?

The two variables affecting the rate of diffusion are the concentration gradient and size of the molecule. Concentration gradient: The movement of the substance is generally along the concentration gradient of the solute and it moves from a region of its higher concentration to a region of its lower concentration.

What factors do not speed up diffusion?

If there is not as great of a difference in concentration, the molecules will not move as quickly and the rate of diffusion will decrease. Temperature: Particles move due to the kinetic energy associated with them. As temperature increases, the kinetic energy associated with each particle also increases.

What are 3 factors that affect diffusion?

Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion.

What makes diffusion faster?

The rate of diffusion depends on three factors: distance – if the diffusion distance is small, diffusion happens faster because the particles do not have as far to travel. … surface area – the larger the surface area the higher the number of particles that will be able to move in a given time so the faster the rate.

How does temperature affect the rate of diffusion experiment?

When temperature increases, the kinetic energy of the particles has increased. … Therefore, at higher temperatures, the rate at which fluid particles will diffuse is faster than at lower temperatures. In the experiment, the food coloring will diffuse faster in the hot water than in the cold water.

How does size affect the rate of diffusion?

Explanation: When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective. … this is actually why cells divide.

Does pH affect rate of diffusion?

The bigger the difference between the two sides of concentration, the faster the molecule will diffuse. Why does pH affect the rate of diffusion? The acidity of alkaline properties of the solute can affect the stability of the cell(s). … It can occur if there is a concentration gradient, and if the membrane is permeable.

Why is rate of diffusion important?

Diffusion can occur across partialy permeable membranes, such as those surrounding cells. Therefore, diffusion is involved in the movement of important molecules into and out of cells. It is important for the uptake of substances needed by cells, and also the removal of waste products produced by the cells.

Does the rate of diffusion change over time?

The rate changes over time because once the molecules reaches equilibrium diffusion slows down. Calculated diffusion rate would be faster than actual, because we really do not know the equilibrium of a molecule in a medium when it diffuses.

What is the rate of diffusion dependent on?

The diffusion rate depends on several factors: the concentration gradient (the increase or decrease in concentration from one point to another); the amount of surface area available for diffusion; and the distance the gas particles must travel.

What’s an example of diffusion?

Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere. A drop of food coloring diffuses throughout the water in a glass so that, eventually, the entire glass will be colored.

Why does diffusion occur?

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Diffusion happens in liquids and gases because their particles move randomly from place to place. Diffusion is an important process for living things; it is how substances move in and out of cells.

How do you determine the rate of diffusion?

Graham’s Law Formula Graham’s law states that the rate of diffusion or effusion of a gas is inversely proportional to the square root of its molar mass. See this law in equation form below. In these equations, r = rate of diffusion or effusion and M = molar mass.

What is the rate of diffusion?

The rate of diffusion, dn/dt, is the change in the number of diffusing molecules inside the cell over time. Since the net movement of diffusing molecules depends on the concentration gradient, the rate of diffusion is directly proportional to the concentration gradient (dC/dx) across the membrane.

Where does diffusion occur in the body?

Examples of diffusion in living organisms Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.