Explain what the change in volume of the dialysis tube indicated. Describe what happened when the volume increased and when the volume decreased.
Question
Explain what the change in volume of the dialysis tube indicated.
Describe what happened when the volume increased and when the volume decreased.
Solution
The change in volume of the dialysis tube indicates the movement of water molecules across the semi-permeable membrane. When the volume of the dialysis tube increased, it suggests that water molecules moved into the tube from the surrounding solution. This could be due to a higher concentration of solute inside the dialysis tube compared to the surrounding solution, creating an osmotic pressure that drives water into the tube.
On the other hand, when the volume of the dialysis tube decreased, it suggests that water molecules moved out of the tube into the surrounding solution. This could be due to a higher concentration of solute in the surrounding solution compared to the dialysis tube, creating an osmotic pressure that drives water out of the tube.
Overall, the change in volume of the dialysis tube indicates the movement of water molecules in response to the concentration gradient of solute across the semi-permeable membrane.
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