Problem
The steepest gradient should result in the highest rate of diffusion. Examine the data presented in the table above for "Change in Weight" during the 15 and 30 minute intervals. Did the greatest changes in weight occur in cells with the steepest concentration gradients? Why or why not?
Using Excel, create a line graph with Total Weight (g) versus Time (min) for each of the model cells. Save a copy of the graph in case your instructor wants you to submit it along with this lab.
Referring to your graph, How does the slope of a segment of a curve relate to the rate of diffusion?
What influence on diffusion (temperature, pressure or concentration) causes the curves for bags (3 and D eventually to become horizontal (have a slope = 0)?