(a) Dispersed phase = liquid ; Dispersion medium $=$ liquid (b) Because adsorption leads to a decrease in the residual forces on the surface of the adsorbent. This causes a decrease in the surface energy of the adsorbent. Therefore, adsorption is always exothermic.(c) $\log\frac{x}{m}=\log k+\frac{1}{n}\log p$At high pressure $\;\frac{x}{m} \alpha p^{\circ}$