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What are the factors affecting the rate of diffusion?
Answer

Factors affecting diffusion :

1. Temperature : The rate of diffusion is directly proportional to the temperature. As the temperature increases the rate of diffusion increases. 

2. Surface area : More the surface area more will be the rate of diffusion. 

3. Concentration gradient: The rate of diffusion is directly proportional to the concentration gradient.

4. Pressure - Increase in the pressure increase diffusion rate.

5. Permeability of the membrane separating the solutions. More permeable the mebrane more will be the diffusion.