Diffusion and osmosis lab PDF

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Maria Maurant BIOL 1500- DAF Sarah Koerner October 1st, 2018

Diffusion and Osmosis Lab

Time (m)

Absorbance Averages Experimental 0.0375 0.0156 0.0113 0.0189 0.0905 0.0316 0.0163

Control 0 5 10 15 20 25 30

0.8070 1.9660 2.1990 2.2453 2.8608 3.2800 3.4913

Average Absorbance of solution outside the bag 4.0000 3.5000 3.0000 2.5000 2.0000 1.5000 1.0000 0.5000 0.0000

0

5

10

15

20

25

30

35

Time (m) Control

Experimental

Figure 1: In figure 1, the absorbance of the solutions outside the bag are shown, this shows that the experimental values were much higher than the control ones, the highest being 30 minutes (3.5000). One can interpret that the lower the time, the lower the absorbance and the higher the time, the higher the absorbance.

Concentration of Sucrose (M)

Average %

Average SD

0.0

63.6115

8.1197

0.2

42.5845

10.8133

0.4

8.0156

10.9691

0.6

-34.5334

12.1918

0.8

-47.0435

14.1625

1.0

-60.7923

13.7743

-24.6433

9.1652

unknown

Average % of concentration of glucose 80.0000 60.0000 40.0000 Average %

20.0000 0.0000 -20.0000

0.0

0.2

0.4

0.6

0.8

1.0

1.2

-40.0000 -60.0000 -80.0000

Figure 2: The average % of concentration of glucose is shown. The values have a pattern in which, the lower the concentration of sucrose, the higher the average %. The higher the concentration of sucrose, the lower the average %.

Average % of concentration of glucose 80.0000 60.0000 40.0000 20.0000

Average %

0.0000 -20.0000

0.0

0.2

0.4

0.6

0.8

1.0 unknown

-40.0000 -60.0000 -80.0000

Figure 3: The average % of concentration of glucose is shown in bar graphs. This graph refers back to figure 2 in regards of how the values are behaving.

Contents in beaker

% Change in mass 0.0 0.2 0.4 0.6 0.8 1.0

Unknown

11.3890 3.8110 -6.0980 -21.1510 -25.5120 -28.7550 -16.1160

Discussion: Starting with Figure 1, the average absorbance of solution outside the bad, depending on the time the absorbance averages were altered. In this case, all averages increased, but they were more likely to increase if they were kept longer. Even the control for 0 minutes had an increase of 0.7695. The one with the highest absorbance average was the 30 minute one. Figure 2, The average % of concentration of glucose is shown. The values have a pattern in which, the lower the concentration of sucrose, the higher the average %. The higher the concentration of sucrose, the lower the average %. Figures 3, bar graphs represent the % of concentration of glucose. Bar graphs are shown to be negative from 0.6-unknown. As a class, the general trend as a whole was consistent throughout also the standard deviation.

Citation:

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