Activity Coefficient Calculator
Calculate activity coefficients that quantify deviation from ideal solution behavior.
Results (Debye-Hückel)
Activity Coefficient γ (limiting): 0.690303
Activity Coefficient γ (extended): 0.698068
Activity a = γm: 0.069030
Debye Parameter A: 0.5090
Activity Coefficient Models
Debye-Hückel: log(γ) = -A|z²|√I (for dilute electrolytes)
Margules: ln(γ₁) = x₂²[A₁₂ + 2(A₂₁-A₁₂)x₁]
Wilson: Uses local composition concept
Activity: a = γ × (concentration measure)
Ideal solution: γ = 1