1. The following experiment was designed to test whether different
concentration gradients affect the rate of diffusion. In this experiment,
four solutions (0% NaCl, 1% NaCl, 5% NaCl, and 10% NaCl) were
tested under identical conditions. Fifteen milliliters of 0% NaCl were put
into a bag formed of dialysis tubing that is permeable to Na, Cl, and
water. The same was done for each NaCl solution. Each bag was
submerged in a separate beaker containing 300 mL of distilled water,
The concentration of NaCl in mg/L in the water outside each bag was
measured at 40-second intervals. The results from the 5% bag are shown
in the table below.
CONCENTRATION IN mg/L OF NaCKOUTSIDE THE 5% NaCl BAG
Time
(seconds)
0
40
80
120
160
amacią na
onmidniem smast
NaCl
(mg/L)
0
130
220
320
400
3.25
2.75
line grapn
Label
Scale
2.5
2.5 so hogyxO S
8 ni abigil
a. On the axes provided, graph the data for the 5% NaCl solution
stqxa
b. Using the same set of axes, draw and label three additional lines
representing the results that you would predict for the 0% NaCl,
10% NaCl, and 10% NaCl solutions. Explain your predictions
c. Use the Graph to calculate the mean rate of diffusion for the 5%
solution. Give your answer to the nearest whole number.
tite