Question: The spinodal curve for a binary liquid system is the locus of states for which Thus it separates regions of stability from instability with respect
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Thus it separates regions of stability from instability with respect to liquid/liquid phase splitting. For a given T, there are normally two spinodal compositions (if any). They are the same at a consolute temperature. On curve II of Fig. 14.12 they are a pair of compositions between xα1 and x1β, corresponding to zero curvature.
Suppose a liquid mixture is described by the symmetrical equation
GE/RT = A(T)x1x2
(a) Find an expression for the spinodal compositions as a function of A(T).
(b)Assume that A(T) is the expression used to generate Fig. 14.15. Plot on a single graph the solubility curve and the spinodal curve. Discuss.
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d2 (&G/RT)-- (const T, P .2 dx 2.4 450 2.2 TK 350 1.8 1.8 250 250 350 450 1
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a Equivalent to d 2 GRTdx 1 2 0 use d 2 GERTdx 1 2 1x 1 x 2 For G E RT Ax 1 x 2 Ax 1 x 1 ... View full answer
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