Liquid Phase Diffusion Coefficient Calculator

Calculate the diffusion coefficient $ D $ (cm²/s) using the Wilke–Chang equation: $$ D = \frac{7.4\times10^{-8}\,\sqrt{\phi\,M_B}\,T}{\mu\,V_A^{0.6}} $$

* Enter the absolute temperature (K), solvent viscosity (cP), solvent molar mass (g/mol), solute molar volume at boiling point (cm³/mol), and solvent association factor $ \phi $ (dimensionless).

Step 1: Enter Parameters

Temperature, $ T $ (K):

e.g., 298 K (25°C)

Viscosity, $ \mu $ (cP):

e.g., 1 cP (approx. water at 25°C)

Solvent Molar Mass, $ M_B $ (g/mol):

e.g., 18 g/mol (water)

Solute Molar Volume, $ V_A $ (cm³/mol):

e.g., 100 cm³/mol (typical for many solutes)

Solvent Association Factor, $ \phi $:

e.g., 2.6 for water

Step 1: Enter Parameters

Calculated Diffusion Coefficient