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- If a solution is separated from the pure solvent by a membrane that is permeable to the solvent but not the solute, the solution will tend to become more dilute by absorbing solvent through the membrane. This process can be stopped by increasing the pressure on the solution by a specific amount, called the osmotic pressure.
www.britannica.com › science › osmosis
Aug 1, 2024 · Osmosis, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes). The process, important in biology, was first thoroughly studied in 1877 by a German plant physiologist, Wilhelm Pfeffer.
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Osmosis has a number of life-preserving functions: it assists plants in receiving water, it helps in the preservation of fruit and meat, and is even used in kidney dialysis. In addition, osmosis can be reversed to remove salt and other impurities from water.
Osmosis provides the primary means by which water is transported into and out of cells. The turgor pressure of a cell is largely maintained by osmosis across the cell membrane between the cell interior and its relatively hypotonic environment.
Oct 4, 2023 · Osmosis is the net diffusion of water molecules from a dilute solution to a concentrated solution when the two are separated by means of a semi-permeable membrane. Hence, they move from a region of higher chemical potential to a region of lower chemical potential.
Feb 17, 2023 · Basic Characteristics of Osmosis. Requires a semipermeable membrane. A slow and spontaneous process. Occurs in liquid medium. Requires no energy expenditure and thus also called passive diffusion. Movement of water occurs from a region of high water potential to a region of low water potential.
This tendency is called osmosis. In osmosis, the solute remains in its original side of the system; only solvent molecules move through the semipermeable membrane. In the end, the two sides of the system will have different volumes.
In this article, you will learn to describe the tonicity of various solutions, understand what osmosis is, predict the movement of the water, and explain features of osmotic pressure.
