125. Задачка по химии №012 513

Calculate the electrokinetic potential of Fe(OH)3 sol particles according to electrophoresis data: external EMF 170 V, distance between electrodes 0.45 m, displacement of the sol boundary to the cathode was 12 mm in 30 min. At an experiment temperature of 298 K, the viscosity of the dispersion (water) medium is 8.94 * 10-4 Pa * s and the relative permittivity is 78.2.

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