Penetration theory assumes that turbulent eddies travel from the bulk of the phase to the interface where they remain constant for a constant exposure time (tₑ). The model correlatingKₗ, mass transfer coefficient and Dₐᵦ, diffusivity can be expressed as

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Penetration theory assumes that turbulent eddies travel from the bulk of the phase to the interface where they remain constant for a constant exposure time (tₑ). The model correlatingKₗ, mass transfer coefficient and Dₐᵦ, diffusivity can be expressed as Answer: Kₗ = 2(Dₐᵦ/πtₑ)⁰․⁵

Question context

This question is part of ⚗️ Biochemical Engineering within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.