Activity coefficient (γ)

Layer 2 — Chemistryin the chemical-thermodynamics subtree

Lewis-Randall 1923: solutions deviate from Raoult/Henry ideality via activity-coefficient γ_i where activity a_i = γ_i x_i. Models: Wilson 1964, NRTL (Renon-Prausnitz 1968), UNIQUAC (Abrams-Prausnitz 1975), UNIFAC group-contribution. …

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