2. (i) The partial molar volume of species 1 in a binary solution at constant t and P is given by $\bar{V}_1 = V_1 + ax_1^2$ (a) What is the corresponding expression of $\bar{V}_2$. (b) What the expression of V consistent with these equations. (c) What are the corresponding equations for $V^E$, $\bar{V}_1^E$ and $\bar{V}_2^E$? (7+2+10) [Turn over (i) The excess Gibbs energy of a liquid mixture at T and P is given by $\frac{G^E}{RT} = x_1x_2(-1.2x_1 - 1.5x_2)$ Find expressions for $ln\gamma_1$ and $ln\gamma_2$.
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