15-20 Drops Of Iodine Potassium Iodidade

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There were 3 different tasks that were simultaneously done at the same time. First, a 250ml beaker filled with DH2O mixed with 20 drops of Iodine Potassium Iodide (IKI for short) was retrieved. Then,15-20 ml of 15% m/v glucose solution mixed with 1% m/v starch solution was brought. Finally, the presoaked dialysis tube was taken back to the station. Goggles, an apron, and gloves where worn for safety purposes because IKI is irritant to the skin. The dialysis tube was presoaked in water before the lab so that it would become more pliable. The materials used for this lab were a 250 ml beaker, 4 glucose testing strips, a dialysis tube that was greater than or equal to 12 centimeters in length, a 50 ml beaker, DH2O, IKI solution, 15% m/v glucose solution, 1% m/v starch solution, a quadruple beam balance…show more content…
Then 50 ml beaker with the glucose and starch mixture was also tested for glucose with a glucose strip. The dialysis tube was then clipped on one end and opened on the other end. The 15 ml of glucose and starch mixture was then poured into the dialysis tube with a pipette. The dialysis tube was then twisted and clipped on the unclipped end of the tube. The mass of the tube was then measured by a quadruple beam balance. The tube was then rinsed in the sink and blotted dry by a paper towel to clean the tube in case some of the glucose accidentally spilled out of the tube. The tube was then placed into the 250 ml beaker and left there to sit for 15 minutes. After 15 minutes, the 250 ml beaker was then tested for glucose with a glucose test strip and so was the contents inside of the tube. All observations and results were recorded in the chart below the procedure. Such observations listed were things like color change in the solutions, mass changes in the dialysis tubing, and what the glucose strips would indicate about the solution
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