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Properties of an Artificial Membrane: Diffusion and Osmosis Purpose- Is to gather enough evidence to prove that osmosis and diffusion occur in these types of membranes, this is done by using a selectively permeable membrane called dialysis tubing. Hypothesis- Osmosis and diffusion will continue until equilibrium is reached and net movement will no longer occur. Solute size and concentration gradient across the selectively permeable membrane will effect diffusion. Materials- please refer to transport across semi-permeable membranes: diffusion and osmosis laboratory exercise hand out. Procedure: please refer to transport across semi-permeable membranes: diffusion and osmosis laboratory exercise hand out. Observations: Table A: Time Dilute Lugol's solution in beaker Glucose and Starch solution in dialysis tube Initial Observations Clear yellow solution/ color changed into blue Clear After 10 minutes More yellow than before/ reacted with benedict to form orange Tubing became cloudy with movement and a little suspension After 20 minutes Dark yellow/ reacted with benedict to form a dark orange Tube became a blue and purple solution with...

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