MENTAL MODEL · M5524

Osmotic Pressure

TechnicalHigh supportBiology

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

When a semipermeable membrane separates two solutions of different concentrations, the solvent (water) automatically flows from the side of lower concentration to the side of higher concentration, and the pressure generated is called osmotic pressure. That is, water flows toward the 'salty' side.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Concentration aggregation of resources. Talent, capital, and attention (water) naturally flow to places with high density and high concentration (salty), such as big cities and leading companies. If you want to attract resources, do not chase resources; instead, increase your own 'concentration' (core competitiveness), and resources will be automatically pumped in by osmotic pressure.

anchor

Anchor fast decisions

Due to the concentration difference of solutes across a semipermeable membrane, a pressure (osmotic pressure) is generated that drives the pure solvent to move toward the concentrated side; essentially, water is replenished from the side of high water potential to the side of low water potential, described by the van 't Hoff equation π = cRT.

MINIMUM ACTION

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Practice this model in one real situation:

Identify the permeability of the membrane
use the concentration difference to determine the direction of water movement
in biology, regulate cell swelling/shrinking
in industry, use reverse osmosis to purify against the concentration gradient.

Check to track your progress (stored locally)

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Source support: Explicit

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en.wikipedia.orghttps://en.wikipedia.org/wiki/Osmotic_pressureZH · Explicit
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