Define Activity Coefficient.
An activity coefficient is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture, the microscopic interactions between each pair of chemical species are the same (or macroscopically equivalent, the enthalpy change of solution and volume variation in mixing is zero) and, as a result, properties of the mixtures can be expressed directly in terms of simple concentrations or partial pressures of the substances present e.g. Raoult's law. Deviations from ideality are accommodated by modifying the concentration by an activity coefficient. Analogously, expressions involving gases can be adjusted for non-ideality by scaling partial pressures by a fugacity coefficient.
How to Calculate Activity Coefficient of Component 1 using Margules Two-Parameter Equation?
Activity Coefficient of Component 1 using Margules Two-Parameter Equation calculator uses Activity Coefficient of Component 1 = exp((Mole Fraction of Component 2 in Liquid Phase^2)*(Margules Two Parameter Equation Coefficient (A12)+2*(Margules Two Parameter Equation Coefficient (A21)-Margules Two Parameter Equation Coefficient (A12))*Mole Fraction of Component 1 in Liquid Phase)) to calculate the Activity Coefficient of Component 1, The Activity Coefficient of Component 1 using Margules Two-Parameter Equation formula is defined as the function of Margules two-parameter coefficients A12 and A21 and the mole fraction of both the components 1 and 2. Activity Coefficient of Component 1 is denoted by γ1 symbol.
How to calculate Activity Coefficient of Component 1 using Margules Two-Parameter Equation using this online calculator? To use this online calculator for Activity Coefficient of Component 1 using Margules Two-Parameter Equation, enter Mole Fraction of Component 2 in Liquid Phase (x2), Margules Two Parameter Equation Coefficient (A12) (A12), Margules Two Parameter Equation Coefficient (A21) (A21) & Mole Fraction of Component 1 in Liquid Phase (x1) and hit the calculate button. Here is how the Activity Coefficient of Component 1 using Margules Two-Parameter Equation calculation can be explained with given input values -> 1.230425 = exp((0.6^2)*(0.56+2*(0.58-0.56)*0.4)).