Aqueous solution of soap above critical micelle concentration forms colloidal solution which shows Tyndall effect.

$$\eqalign{ & {\text{At equilibrium}},\,\Delta G = 0 \cr & \Delta G = \Delta H - T\Delta S \cr & \therefore \Delta H = T\Delta S \cr} $$

Mass of $${O_2}$$ per gram of adsorbent $$ = \frac{{3.6}}{{1.2}} = 3$$
No. of moles of $${O_2}$$ per gram of adsorbent $$ = \frac{3}{{32}}$$
Volume of $${O_2}$$ per gram of adsorbent $$ = \frac{3}{{32}} \times \frac{{0.0821 \times 273}}{1} = 2.10$$

$$\eqalign{ & \frac{{{\text{Coagulation power of}}\,AlC{l_3}}}{{{\text{Coagulation power of}}\,NaCl}} \cr & = \frac{{{\text{Coagulation value of}}\,NaCl}}{{{\text{Coagulation value of}}\,AlC{l_3}}} \cr & = \frac{{52}}{{0.093}} = 559.13 \approx 560 \cr} $$