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POTATO OSMOSCOPE


Posted Date:     Total Responses: 0    Posted By: sasi kala   Member Level: Diamond   Points/Cash: 2   


POTATO OSMOSCOPE


AIM:

To demonstrate the principle of osmosis with the help of a living system.

MATERIALS REQUIRED:

Potato, beaker with water and strong sugar solution.

PROCEDURE:

Potato tuber is taken and its one end is cut to make it flat. At the other end of the potato, a cylindrical cavity is made. Strong sugar solution is poured into the cavity of the potato. This initial level is marked with the help of a ball pin. This set up is called potato osmoscope or potato osmometer.
This potato osmoscope is placed in a beaker containing colored water.

OBSERVATION:

After a few hours, the sugar solution rises within the osmoscope and gets colored.

INFERENCE:

The reason for the rise in the sugar solution is osmosis. This movement of water molecules towards the higher concentration solution through a membrane is osmosis. The potato cell membrane acts as the semi-permeable membrane.


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Author: sasi kalaMember Level: DiamondRevenue Score: 2 out of 52 out of 5
Aim of this experiment is to demonstrate the principle of osmosis with the help of a living system (potato).



Author: SubiMember Level: SilverRevenue Score: 5 out of 55 out of 55 out of 55 out of 55 out of 5
The word strong sugar solution is not correct, it should have been concentrated sugar solution.

The process of movement of solvent molecules from a region of it's higher concentration( more solvent molecules, in this case water) to a region of it's lower concentration through a semi-permeable membrane is called osmosis.

Even if you do not use coloured water then also you can observe osmosis to happen as because you will find a change in height of the water level within the osmoscope where the initial height has been marked by a pin.So,it's not necessary to use coloured water.


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