|1.||thermodynamics Also called: escaping tendency, f a property of a gas, related to its partial pressure, that expresses its tendency to escape or expand, given by d(logef) = dμ/RT, where μ is the chemical potential, R the gas constant, and T the thermodynamic temperature|
|2.||the state or quality of being fugacious|
fugacity fu·gac·i·ty (fyōō-gās'ĭ-tē)
A measure of the tendency of a substance, often a fluid, to move from one phase to another or from one site to another.
a measure of the tendency of a component of a liquid mixture to escape, or vaporize, from the mixture. The composition of the vapour form of the mixture, above the liquid, is not the same as that of the liquid mixture; it is richer in the molecules of that component that has a greater tendency to escape from the liquid phase. The fugacity of a component in a mixture is essentially the pressure that it exerts in the vapour phase when in equilibrium with the liquid mixture.
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