osmosis

The movement of solvent molecules from the region of their higher concentration to the region of their lower concentration through a semi permeable membrane is called osmosis..

It is a physical process in which the solvent (water) moves from the region of its higher concentration to the region of its lower concentration across a semi-permeable membrane. This is to say that water moves from a dilute to a concentrated solution. Water is absorbed into the root cells by ..

A thistle funnel, covered at the broad end by a differentially permeable membrane, contains a 10% sugar solution. The beaker contains a 5% sugar solution as shown in fig. a. The solute is unable to pass through the membrane, but the water passes freely through in both directions. The net movement ..

By this technique sewage water can he converted into fairly clean drinking wate..

Reverse Osmosis and Water Purification - The osmosis process can actually be reversed if a pressure larger than the osmotic pressure be applied to the solution. This phenomenon has found uses in water purification, especially the desalination of sea water. An apparatus for this ..

Osmosis in a cell can be demonstrated by a potato osmoscope experiment. Peel the skin of a potato and remove the inner contents to form a cup shaped hollow. Place the potato in a container with water. Pour 5% sugar solution in to the potato cup up to a particular level. Pierce a pin to m..

Peel off the skin of a large sized potato with a scalpel. Cut its one end to make the base flat. Make a hollow cavity in the potato almost up to the bottom. Add sugar solution into the cavity and mark the level by inserting a pin in the wall of the cavity of the tuber. Place the po..

The excess pressure that must be applied to the solution/conc.solution to prevent osmosis..

: This is the latest technology which uses the principle of osmosis. It does not require electricity and maintenance is minimum. The water obtained through membrane technology is very pure and without any contamination. This type of filter is widely used in homes , hospitals and hotel..

The physical processes involving movement of materials in and out of a cell are diffusion and osmosis. Both these movements involve movement along the concentration gradient. Hence, there is no expenditure of energ..