14. Table 1.6 shows the dependence of surface tension on the concentration of the surfactant solution. Determine the area occupied by a surfactant molecule in the saturated adsorption layer and the thickness of the adsorption layer. The density of the surfactant is considered equal to p = 0.95 g/cm3.
Surface tension of aqueous solutions of surfactants at 20 C
Option 14
Surfactant, s, g/l 0.000 0.001 0.0025 0.005 0.0075 0.010 0.05 0.1 0.25 0.5 0.6 0.8 1.0

C10n19, C*103 J/m2 72.75 60.0 57.0 54.5 25.0 50.0 40.0 35.0 29.0 27.5 26.8 26.7 26.7

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