Table of Contents
How can the rate of diffusion be increased in living systems?
Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. Solvent density: As the density of a solvent increases, the rate of diffusion decreases.
What are the three main factors that affect the rate of diffusion?
Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion.
How does the diffusion rate change when temperature increases?
Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. If the medium is less dense, diffusion increases.
Which factors would increase the rate of diffusion quizlet?
Terms in this set (4)
- Size of concentration gradient. Faster at larger gradients.
- Mass of transported molecules. Smaller diffuses faster.
- Membrane surface area. Faster over a larger membrane area.
- Temperature. Increase in temperature and diffusion rate.
How does distance affect rate of diffusion?
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.
Which of the following factors influences the rate at which diffusion takes place?
Many factors influence the rate at which diffusion takes place, including the medium through with a substance is diffusing, the size of molecules diffusing, the temperature of the materials, and the distance molecules travel between collisions.
Is rate of diffusion is directly proportional to temperature?
Also, according to Graham’s law of diffusion, rate of diffusion is directly proportional to square root of temperature.
Which of these would increase the rate of diffusion of a molecule?
Temperature increases the kinetic energy of the molecule so it moves faster and hence the rate of diffusion increases. the more the concentration gradient the higher the driving force of the process and hence the higher the rate of diffusion.
How does size affect the rate of diffusion?
The size of the molecule: The smaller the molecule such as gas, the faster the rate of diffusion while the larger the molecules (liquid) the slower the rate of diffusion Concentration gradient : The greater the concentration difference, the faster the rate of diffusion. Temperature : The higher the temperature, the faster the rate of diffusion
Which is faster diffusion or a concentration gradient?
concentration difference (concentration gradient) – diffusion is faster if there is a big difference in the concentration between the area the substance travels from and the area that it is moving to 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
Why is diffusion faster in gases than in liquids?
Diffusion in gases is faster than in liquids. This is because there is almost no force of attraction in gas molecules and this makes gas molecules free to move in every direction. These are the factors that affect rate of Diffusion; Concentration gradient: The greater the concentration difference, the faster the rate of diffusion.
How does diffusion take place in a cell?
Diffusion through cellular membranes can take place with several substances. Ions, water and molecules that are required for basic cell functions can move in and out of cells through diffusion. Diffusion can take two forms, which are facilitated diffusion and simple passive diffusion.