OSMOSIS AND DIFFUSION LAB

                                                                       OSMOSIS AND DIFFUSION PURPOSE: To see the effects of a semipermeable membrane. HYPOTHESIS: If the water supply with tincture of ace diffuses by means of and through the beauty, then i think the starch                   go forth mixture color. The reason wherefore I think t don the water will diffuse                   through the process because the concentration gradient outside the understructure is                   much than than inside the bag. MATERIALS: Dialysis Bag                  Starch Solution (Small Beaker)                   Strings (2)                   single                    Beaker cognitive operation: 1.Get starch solution and put it in the dialysis bag. 2.Tie some(prenominal) sides of the dialysis of the dialysis bag. 3.Put water into the beaker. 4.Put unity into the beaker with water making a iodine solution. 5.Place dialysis bag into beaker and observe. 6.Record observations. OBSERVATIONS AND RESULTS: tip BEFORE charge afterward divergency IN WEIGHT COLOR BEFORE COLOR AFTER 3.0g 4.9g 1.9g White color in 8.6g 8.8g 0.2g White lofty 7.9g 7.9g 0.0g White colour 8.6g 8.8g 0.2g White Purple 8.8g 8.9g 0.1g White Purple 9.3g 13.3g 4.0g White Purple ANALYSIS: The results of my observations are that all the dialysis bags increased in                  weight, excerpt one. However, all of the dialysis bags did change color. All                  the iodine in the water diffused into the bag. some(a) water did get into the                  bag. N one of the iodine was seen inside of the wat! er.

My opening was                  correct because the water outside the bag diffused into the bag changing                  the color of the starch. CONCLUSIONS: The membrane of the dialysis bag was permeable to the iodine ,but                           not to the all the water. Some mistakes in the experiment ability be                           that there could have been more water in the beaker than other or t                           hat the was more iodine in the water. In the future these mistakes   Â Â Â Â Â Â Â                   could be prevented if a graduated cylinder be used to accurately                           mea legitimate the essence of each substance to make sure each          ... If you hope to get a full essay, do it on our website: OrderEssay.net

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