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Colligative Osmotic Pressure van't Hoff Extended Calculator

Osmotic pressure with extended van't Hoff correction.

Calculates osmotic pressure using Π = cRT(1 + Bc), where c is the concentration, R = 8.314 J/(mol·K), T is temperature, and B is the second virial coefficient for deviations from ideal behaviour.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mol/L
K
L/mol

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Π = c · R · T · (1 + B·c)

In depth

Calculates osmotic pressure using Π = cRT(1 + Bc), where c is the concentration, R = 8.314 J/(mol·K), T is temperature, and B is the second virial coefficient for deviations from ideal behaviour.