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IUPAC - fugacity (F02543)

fugacity, \(f\), \(\tilde{p}\)

Of a substance B, \(f_{\text{B}}\) or \(\tilde{p}_{\text{B}}\), in a gaseous mixture is defined by \(f_{\text{B}}=\lambda _{\text{B}}\ \lim _{p\rightarrow 0}\frac{p_{\text{B}}}{\lambda _{\text{B}}}\), where \(p_{\text{B}}\) is the @P04420@ of B and \(λ_{\text{B}}\) its @A00019@.
Green Book, 2nd ed., p. 50 [Terms] [Book]