Science & engineering
Ideal osmotic pressure
Estimate dilute-solution osmotic pressure from concentration and a particle factor.
A clear answer. Here’s how.
Uses π=iMRT for an ideal dilute solution, converting M from mol/L to mol/m³ and using R=8.31446261815324 J/(mol·K). Reports pascals, kPa, bar and standard atmospheres. The supplied particle factor is not inferred from a chemical formula. Activities, membrane selectivity and concentrated-solution effects are excluded. This is a chemistry model, without clinical interpretation.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Formula-unit concentration (mol/L)
- 0.1
- Absolute temperature (K)
- 298.15
- Effective particle factor i
- 1
Example result
- Ideal osmotic pressure
- 247,895.70296 Pa
- Pressure in kilopascals
- 247.89570296 kPa
- Pressure in bar
- 2.4789570296 bar
- Pressure in standard atmospheres
- 2.4465403697 atm