112. Solving a chemistry problem

112. Solving a chemistry problem

601. The table below cites the results of measurements of the turbidity of solutions of non-ionic surfactant Triton X-100 (condensation product of ethylene oxide with octylphenol, molecular weight 650 g/mol) in the concentration range above CMC. Determine from them the molar mass and aggregation number of micelles (the number of surfactant molecules in one micelle), if it is known that the CMC of these solutions is 3.0 g/l, the turbidity at the CMC point is 0.13 m-1, the light wavelength is 436 nm, the refractive index light in solvent 1.3328, refractive index increment Δn/Δc = 0.155 cm3/g

s, g/l 4.27 5.99 7.75 9.67 11.29 12.82 13.42
t*102, m-1 20.2 30.1 40.6 53.4 63.9 74.9 78.8

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