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iwaldron's picture

Interpreting Experimental Results

Submitted by iwaldron on Thu, 10/27/2016 - 3:42pm.

Thanks for your questions. Any molecule or ion that can cross the dialysis tubing in one direction can also cross in the other direction. We have observed that, over time, the solution in the beaker becomes much lighter as more of the iodine diffuses into the bag. In our experience the solution does not become entirely clear. Iodine-iodide (KI) solution is less stable in light, but I wouldn’t expect it to break down that rapidly (http://www.onboces.org/safety/msds/S/Scholar%20Chemical/Iodine-Iodide_KI_Solution_355.00.pdf).

Ingrid

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