A binary liquid mixture is in equilibrium with its vapor at a temperature T=300 K. The liquid mole fraction x₁ of species 1 is 0.4 and the molar excess Gibbs free energy is 200 J/mol. The value of the universal gas constant is 8.314 J/mol-K and γ_i denotes the liquid-phase activity coefficient of species i. If ln(γ₁)=0.09, then the value of ln(γ₂) up to 2 digits after the decimal point, is