Membrane Characterization System Experiment

Today, some of us conducted the experiment on theMembrane Characterization System Experiment in W314 lab.

The objective of this experiment is to study the osmotic pressure and resistance of different types of membranes.

Theoretically, we can calculate the osmotic pressure using this formula:

π = MRT

π- Osmotic Pressure

M- Concentration

R- Universal Gas Constant

T- Temperature

We want to prove that the experimental results would tally with theoretical value that we have calculated.

However, we couldn't get any results due to the following problems:

• we couldn't measure any voltage because there wasn't any point for us to connect the multimeter to the electrode
• there isn't any significant change in the water level, hence we couldn't calculate the osmotic pressure
• we cannot measure the conductivity because the conductivity was out of range for the conductivity meter

These are the possible causes which might have caused the problems to occur:

• the membrane; wrong placing of the membrane
• the salt solution is too concentrated for the osmosis phenomena to occur