Membrane size selectivity

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Reference no: EM133200736 , Length: 50 Words

Experiment 1: Membrane Size Selectivity

Take a diffusion bag and a 250 mL beaker from the Containers shelf and place them onto the workbench.

Fill the bag with 45 mL of water and 5 mL of Lugol's iodine solution from the Materials shelf.

Fill the beaker with 150 mL of water and 50 mL of 2% starch solution. Record the color of the liquid in the beaker and of the liquid in the diffusion bag to reference later.

Move the diffusion bag into the beaker.

Watch the beaker and bag for signs of color change. After 30 seconds, move the diffusion bag out of the beaker and onto the workbench. What color is the liquid in the beaker? What color is the liquid in the diffusion bag? Record your observations to reference later.

Empty the beaker and diffusion bag into the waste bin and then place the empty containers in the sink.

Reference no: EM133200736

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