3. According to the experimental data on the dependence of the surface tension of aqueous solutions of surface-active substances (surfactants) on concentration (see Table 3) at 25°C, establish graphically whether this surfactant is colloidal or not, and if it is, determine the value of its critical micelle concentration ( KKM). In the table, concentrations are expressed in mmol/l and surface tensions in mJ/m2.

option number concentration
0.1 0.3 0.6 1 3 6 10
9 70 51 38 32 29 28 28

Your answer must be justified, although it may be ambiguous.

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