Explain Vapour Liquid Equilibrium (VLE).
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 using Modified Raoult's Law in VLE?
Activity Coefficient using Modified Raoult's Law in VLE calculator uses Activity Coefficient in Raoults Law = (Mole Fraction of Component in Vapor Phase*Total Pressure of Gas)/(Mole Fraction of Component in Liquid Phase*Saturated pressure) to calculate the Activity Coefficient in Raoults Law, The Activity Coefficient using Modified Raoult's Law in VLE formula is defined as the ratio of the product of the vapour phase mole fraction and the total pressure to the product of the liquid phase mole fraction and the saturated pressure of mixture or solution. Activity Coefficient in Raoults Law is denoted by γRaoults symbol.
How to calculate Activity Coefficient using Modified Raoult's Law in VLE using this online calculator? To use this online calculator for Activity Coefficient using Modified Raoult's Law in VLE, enter Mole Fraction of Component in Vapor Phase (yGas), Total Pressure of Gas (PT), Mole Fraction of Component in Liquid Phase (xLiquid) & Saturated pressure (Psat ) and hit the calculate button. Here is how the Activity Coefficient using Modified Raoult's Law in VLE calculation can be explained with given input values -> 3.545 = (0.3*102100)/(0.51*50000).