The substance(s) that did not diffuse across the dialysis membrane: Why did the

Question

The substance(s) that did not diffuse across the dialysis membrane: Why did the color change inside the bag? Why didn't the liquid in the beaker change color? How did you determine that glucose diffused out of the dialysis bag? Describe the diffusion (or lack of diffusion) of substances through the dialysis membrane based on their size, as well as the characteristics of the membrane itself. Osmosis I. Record your observations from the potato experiment. From the above table, which solution(s) is/are: Hypotonic: Isotonic: Hypertonic: What effect does the 2% NaCl solution have on water balance in the potato cells?

Explanation / Answer

B. Osmosis

Percent gain or loss

1. 18.18% gain

2. 12.5% gain

3. 0% gain

From the above table

a. Hypotonic: Water and 0.9% NaCl Because in your results the potato cells are gaining weight due to the solvent flow into the cells from the solution

b. Isotonic: 2.0% NaCl There is no change in the mass.

c. Hypertonic:

3. The 2.0% NaCl makes the potato cells lose water as 2% salt is more hypertonic. As the concentration of salt is outside compared to the concentration inside the cell so the potato cells will lose water until the water is balanced on both sides.

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