Osmotic pressure

Osmotic pressure is the minimum <a href="/facts/Pressure/eyc37GRG">pressure</a> which needs to be applied to a <a href="/facts/Solution_(chemistry)/MGchhMQV">solution</a> to prevent the inward flow of its pure <a href="/facts/Solvent/LoMPMz8S">solvent</a> across a <a href="/facts/Semipermeable_membrane/YxENKzn5">semipermeable membrane</a>.
It is also defined as the measure of the tendency of a solution to take in its pure solvent by <a href="/facts/Osmosis/vYPfyX76">osmosis</a>.[not verified in body] Potential osmotic pressure is the maximum osmotic pressure that could develop in a solution if it were separated from its pure solvent by a semipermeable membrane.
Osmosis occurs when two solutions containing different concentrations of solute are separated by a selectively permeable membrane. Solvent molecules pass preferentially through the membrane from the low-concentration solution to the solution with higher solute concentration. The transfer of solvent molecules will continue until osmotic equilibrium is attained.

Osmotic pressure open-in-new

Osmotic pressure