5. Solution to Chemistry Problem
Seller: Derkach
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- The value of the diffusion coefficient D of surfactant micelles in an aqueous solution at 25 °C was determined experimentally. Find the diameter of the micelles, the association number m and the micellar mass Mmic of the surfactant if the viscosity of the dispersion medium η = 0.89 mPa * s.
Surfactant Formula Diffusion coefficient D * 1010, m2 / s Surfactant density ρ, g / cm3
Dodecyl ether of dodecaethylene glycol C12H25O (CH2CH2O) 12H 1.072 1.06
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