Osmosis is defined as the flow of water or solvent molecules from a region of dilute or a weaker solution to a region of concentrated or stronger solution through a selectively or differentially permeable membrane.
It should be noted that osmosis is a special form of diffusion.
Conditions necessary for osmosis to take place:
There are three major conditions which are necessary for osmosis to take place.
These are:
1- Presence if stronger solution e.g sugar or salt solution.
2- Presence of a weaker solution e.g distilled water.
3- Presence of a selectively or differentially permeable membrane.
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