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A Margules function is a function added to the Raoult's law description of a liquid solution to account for deviations from ideality. See also Margules activity model. The amended Raoult's law description of the vapor pressure above the solution becomes: :P1=P *1x1fM,1 :P2=P *2x2fM,2 The Margules function has the general form: :fM,1 = exp(αx22+βx23+γx23+δx24+...) The function always contains the opposite mole fraction x2 (= 1-x1 for a binary system). The numbers of Margules parameters α, β, γ, δ, .. varies. The larger the deviations from ideality the more parameters are required. The Gibbs-Duhem relation can be used to fix the Margules function for the second component once the first has been chosen. The case where only one parameter α is needed is known as the regular solution model. ==See also== Van Laar equation 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Margules function」の詳細全文を読む スポンサード リンク
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