The higher the concentration, the faster the rate of diffusion. The higher the temperature, the faster the rate of diffusion. The higher the molecular weight, the slower the rate of diffusion. Since this lab cannot be duplicated adequately at a distance and a video version is not an acceptable substitute, data from an actual lab is provided for you to use. You will need to understand the concept of concentration differences .
Diffusion occurs from a region of higher concentration to a region of lower concentration.
The greater the difference in concentrations, the greater the net rate of diffusion. Assume that only water, not molasses, is capable of moving through the carrot. You must look at differences in the concentration of water inside and outside the carrot. As water moves into the carrots, the concentration of water inside the carrots increases, and the difference between the concentration of water inside and outside the carrot decreases. Therefore, water will move into the carrot at a slower rate.