1. Which tubing increased the most in volume? Why? The tubing size increased the most in the 30% solution. The volume increased because the solute concentrate was the highest. The higher the solute concentrate caused the water to try to reach equilibrium. The lower concentration bags tried to reach equilibrium slower. The yellow band colored bag increased the most in volume because the solution inside had a greater concentration of sucrose than Beaker #2. The solution of the yellow band colored bag was hypotonic and the water moved into the bag from the solution of the beaker at the fastest rate. 2. What does this tell you about the relative tonicity between the contents of the tubing and the solution in the beaker? Diffusion and Osmosis
The solution in the yellow banded tube was hypotonic compared to the solution in Beaker #2. This indicates that the water from the solution outside of the bag moved through the semipermeable membrane to get the higher concentrated solution inside the bag.
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- Fall '19