The viscosity of liquid mixtures

Abstract

A semiempirical equation is proposed to describe the effect on the viscosity of a solvent due to the addition of a solute. This equation is applied to many types of mixtures but not those for which components are electrolytes or water. The B coefficient at infinite dilution is

B°₂ = V^·₁ + V^·₂ /2[ln   η^·₂ /In η^·₁ - H°^/₂-H^·₂ / 2.45RT ]

where H°₂-H^·₂ is the heat of solution of the liquid solute, V^·₁ and V^·₂ the molar volumes and η^·₂ and η^·₁ the viscosities of the pure components.