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Activity coefficient of component 2 is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. Check FAQs
γ2=exp(A'21((1+(A'21x2A'12x1))-2))
γ2 - Activity Coefficient of Component 2?A'21 - Van Laar Equation Coefficient (A'21)?x2 - Mole Fraction of Component 2 in Liquid Phase?A'12 - Van Laar Equation Coefficient (A'12)?x1 - Mole Fraction of Component 1 in Liquid Phase?

Activity Coefficient of Component 2 using Van Laar Equation Example

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Here is how the Activity Coefficient of Component 2 using Van Laar Equation equation looks like with Values.

Here is how the Activity Coefficient of Component 2 using Van Laar Equation equation looks like with Units.

Here is how the Activity Coefficient of Component 2 using Van Laar Equation equation looks like.

1.0905Edit=exp(0.59Edit((1+(0.59Edit0.6Edit0.55Edit0.4Edit))-2))
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Activity Coefficient of Component 2 using Van Laar Equation Solution

Follow our step by step solution on how to calculate Activity Coefficient of Component 2 using Van Laar Equation?

FIRST Step Consider the formula
γ2=exp(A'21((1+(A'21x2A'12x1))-2))
Next Step Substitute values of Variables
γ2=exp(0.59((1+(0.590.60.550.4))-2))
Next Step Prepare to Evaluate
γ2=exp(0.59((1+(0.590.60.550.4))-2))
Next Step Evaluate
γ2=1.0905377860945
LAST Step Rounding Answer
γ2=1.0905

Activity Coefficient of Component 2 using Van Laar Equation Formula Elements

Variables
Functions
Activity Coefficient of Component 2
Activity coefficient of component 2 is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances.
Symbol: γ2
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Van Laar Equation Coefficient (A'21)
The Van Laar Equation Coefficient (A'21) is the coefficient used in the van Laar equation for component 2 in the binary system.
Symbol: A'21
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Mole Fraction of Component 2 in Liquid Phase
The mole fraction of component 2 in liquid phase can be defined as the ratio of the number of moles a component 2 to the total number of moles of components present in the liquid phase.
Symbol: x2
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
Van Laar Equation Coefficient (A'12)
The Van Laar equation coefficient (A'12) is the coefficient used in the van Laar equation for component 1 in the binary system.
Symbol: A'12
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Mole Fraction of Component 1 in Liquid Phase
The mole fraction of component 1 in liquid phase can be defined as the ratio of the number of moles a component 1 to the total number of moles of components present in the liquid phase.
Symbol: x1
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
exp
n an exponential function, the value of the function changes by a constant factor for every unit change in the independent variable.
Syntax: exp(Number)

Other Formulas to find Activity Coefficient of Component 2

​Go Activity Coefficient of Component 2 using Margules One Parameter Equation
γ2=exp(A0(x12))
​Go Activity Coefficient of Component 2 using Margules Two-Parameter Equation
γ2=exp((x12)(A21+2(A12-A21)x2))

Other formulas in Correlations for Liquid Phase Activity Coefficients category

​Go Activity Coefficient of Component 1 using Margules One Parameter Equation
γ1=exp(A0(x22))
​Go Activity Coefficient of Component 1 using Margules Two-Parameter Equation
γ1=exp((x22)(A12+2(A21-A12)x1))
​Go Activity Coefficient of Component 1 using Van Laar Equation
γ1=exp(A'12((1+(A'12x1A'21x2))-2))
​Go Excess Gibbs Free Energy using Margules Two-Parameter Equation
GE=([R]Tactivity coefficentx1x2)(A21x1+A12x2)

How to Evaluate Activity Coefficient of Component 2 using Van Laar Equation?

Activity Coefficient of Component 2 using Van Laar Equation evaluator uses Activity Coefficient of Component 2 = exp(Van Laar Equation Coefficient (A'21)*((1+((Van Laar Equation Coefficient (A'21)*Mole Fraction of Component 2 in Liquid Phase)/(Van Laar Equation Coefficient (A'12)*Mole Fraction of Component 1 in Liquid Phase)))^(-2))) to evaluate the Activity Coefficient of Component 2, The Activity Coefficient of Component 2 using Van Laar Equation formula is defined as the function of van Laar coefficients A'12 and A'21 and the mole fraction of both components 1 and 2. Activity Coefficient of Component 2 is denoted by γ2 symbol.

How to evaluate Activity Coefficient of Component 2 using Van Laar Equation using this online evaluator? To use this online evaluator for Activity Coefficient of Component 2 using Van Laar Equation, enter Van Laar Equation Coefficient (A'21) (A'21), Mole Fraction of Component 2 in Liquid Phase (x2), Van Laar Equation Coefficient (A'12) (A'12) & Mole Fraction of Component 1 in Liquid Phase (x1) and hit the calculate button.

FAQs on Activity Coefficient of Component 2 using Van Laar Equation

What is the formula to find Activity Coefficient of Component 2 using Van Laar Equation?
The formula of Activity Coefficient of Component 2 using Van Laar Equation is expressed as Activity Coefficient of Component 2 = exp(Van Laar Equation Coefficient (A'21)*((1+((Van Laar Equation Coefficient (A'21)*Mole Fraction of Component 2 in Liquid Phase)/(Van Laar Equation Coefficient (A'12)*Mole Fraction of Component 1 in Liquid Phase)))^(-2))). Here is an example- 1.090538 = exp(0.59*((1+((0.59*0.6)/(0.55*0.4)))^(-2))).
How to calculate Activity Coefficient of Component 2 using Van Laar Equation?
With Van Laar Equation Coefficient (A'21) (A'21), Mole Fraction of Component 2 in Liquid Phase (x2), Van Laar Equation Coefficient (A'12) (A'12) & Mole Fraction of Component 1 in Liquid Phase (x1) we can find Activity Coefficient of Component 2 using Van Laar Equation using the formula - Activity Coefficient of Component 2 = exp(Van Laar Equation Coefficient (A'21)*((1+((Van Laar Equation Coefficient (A'21)*Mole Fraction of Component 2 in Liquid Phase)/(Van Laar Equation Coefficient (A'12)*Mole Fraction of Component 1 in Liquid Phase)))^(-2))). This formula also uses Exponential Growth (exp) function(s).
What are the other ways to Calculate Activity Coefficient of Component 2?
Here are the different ways to Calculate Activity Coefficient of Component 2-
  • Activity Coefficient of Component 2=exp(Margules One Parameter Equation Coefficient*(Mole Fraction of Component 1 in Liquid Phase^2))OpenImg
  • Activity Coefficient of Component 2=exp((Mole Fraction of Component 1 in Liquid Phase^2)*(Margules Two Parameter Equation Coefficient (A21)+2*(Margules Two Parameter Equation Coefficient (A12)-Margules Two Parameter Equation Coefficient (A21))*Mole Fraction of Component 2 in Liquid Phase))OpenImg
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