osmometer

1. ACTIVITY 3.2 STUDYING OSMOSIS
USING A OSMOMETER
Learning outcomes
Explain the movement of water molecules across the
plasma membrane by osmosis

2.  Aim: To study the movement across plasma
membrane
 Problem statement: What substances can diffuse
throght a semi permeable membrane?
 Hypothesis :
 Variable:
 Manipulated
 Responding
 Fixed
 Procedure – passive statement
 Result – table and graph
 Conclusion – hypothesis accepted or not?

3. RESULT:
Time interval
(min)
Level of sucrose solution in the capillary
tube (cm)
0
10
20
30
40

4. PLOT THE GRAPH

5. DISCUSSION
1. Describe the graph that you have plotted
2. What cause the change in the levels of the sucrose
solution?
3. What inferences can you make to regarding the size of
the sucrose and water molecules, and the size of the
pore on the Visking tube?
4. Predict the outcome of the results if the experiment is
repeated by filling the Visking tube with the distilled
water and the beaker with 30% sucrose solution.