Fugacity of component i in Liquid phase

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Jul 24, 2020, 6:28:07 PM

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Feb 8, 2014, 11:24:38 PM

{\hat{f}}_{i}^{L} = x_{i} γ_{i} f_{i}^{L}

$hatf_i^L = x_i gamma_i f_i^L$

mole fraction of component i

$"mole fraction of component i"$

activity coefficient of component i

$"activity coefficient of component i"$

fugacity of pure liquid component i

$"fugacity of pure liquid component i"$

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Fugacity can be thought of as the activity of a gas. The fugacity of the $i^{t h}$ $i^(th)$ component in a mixture at equilibrium is the same whether in vapor or liquid phase. For an Ideal Gas fugacity is equal to Pressure. This equation defines the fugacity of $i^{t h}$ $i^(th)$ component in a liquid mixture using the component characteristics of: mole fraction, activity coefficient, and fugacity of the pure liquid component.

The activity coefficient $γ_{i}$ $gamma_i$ , is a correction for liquid phase non-ideality for the $i^{t h}$ $i^(th)$ component of the mixture. Many models have been proposed for $γ_{i}$ $gamma_i$ such as the Van Laar model.

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Fugacity of component i in Liquid phase

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