Mutual solubility data for the isooctane $(1)/$furfural $(2)$ system at $25C$ are

$\backslash$table$[[,$Liquid Phase I,Liquid Phase II$],[xl,0\mathrm{.}0341,0\mathrm{.}9551]]$

Compute:

a$)$ The distribution coefficients for isooctane and furfural

b$)$ The relative selectivity for isooctane relative to furfural

c$)$ The activity coefficient of isooctane in liquid phase $1$ and the activity coefficient of furfural in liquid phase II assuming

$($:${}_2^{(1)}$