In this video the concept of Osmosis made pretty easy for students to understand ....
Osmosis is the net movement of water molecules across a semi-permeable membrane from a region of low solute concentration to a region of high solute concentration (until equilibrium is reached)
Water is considered the universal solvent – it will associate with, and dissolve, polar or charged molecules (solutes)
Because solutes cannot cross a cell membrane unaided, water will move to equalise the two solutions
At a higher solute concentration there are less free water molecules in solution as water is associated with the solute
Osmosis is essentially the diffusion of free water molecules and hence occurs from regions of low solute concentration..
the video says it alll..
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