$8\mathrm{.}18$ For a binary mixture of ethanol $(1)$ and water $(2),$ the following vaporliquid equilibrium data have been reported by Pemberton and Mash $(1978)$ at $303\mathrm{.}15K$ :

$\backslash$table$[[P($bar$),x_1,y_1,P($bar$),x_1,y_1$