Liquid Phase Diffusion Coefficient Calculator

Calculate the diffusion coefficient $D$ (cm²/s) using the Wilke–Chang equation: $D = \frac{7.4 \times 10^{- 8} \sqrt{ϕ M_{B}} T}{μ V_{A}^{0.6}}$

* 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 $ϕ$ (dimensionless).

Step 1: Enter Parameters

Temperature,

T

(K):

e.g., 298 K (25°C)

Viscosity,

μ

(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,

ϕ

e.g., 2.6 for water

Step 1: Enter Parameters

Calculated Diffusion Coefficient