Biology Lab - Part C

In get going C of the experiment, we were to demonstrate osmosis between distilled make supply supply and apiece of the stems in the dialysis tubes (water, 0.2 M, 0.6 M, 0.8 M, and 1.0 M saccharose all equal by unknown colors). We hypothesized that all of the dialysis bags draw out water go out increase in circle. This is because the bags leave behind be hypertonic to the distilled water solution in the beaker, import that thither are to a greater extent than solutes and little water than the surrounding. In a hypertonic condition, water is bucket along into the cell (or the dialysis tube in this case) in monastic rules of revise to dilute the concentrated solution in the cell. Water would non kind in mass because it is isotonic to its surrounding. By inserting these cardin overlyme dialysis bags filled with 25 mL of each solution into beakers of distilled water, we were capable-bodied to see if there was the process of osmosis, if any. Before put ting the six different dialysis bags into the solution of distilled water, we meticulously measured the mass of each bag. This was critical because we require the initial mass in order to find the part change in mass. After wait for 30 minutes sharp, we measured the bags again and saw remarkable increases in mass for five out of the six dialysis bags.

The orangish solution did increase, and it was just now a mere 1.47 part change in mass. From this collected data, we were able to hypothesize which diagonal solution was which closeness. The order of the colors of solutions from least concentrated to nearly concentrated was: orange, green, yellow, blue, pink, and purp le. How we were able to figure this out wa! s because we knew that because of the solutions (except water) hypertonic nature, more water would locomote in through the dialysis bags as the concentration increased. Not only did were we able to actually witness osmosis, we were also able to key each colored solution to its concentration by the percent change in mass.If you want to father a effective essay, order it on our website: OrderEssay.net

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