703. Fe(OH)3 hydrosol electrophoresis was carried out at a potential difference on the electrodes of 150 V and a distance between the electrodes of 30 cm. The displacement of particles in 20 minutes was 24 mm. The relative permittivity of water is 80.2, the viscosity of water is 1.00 mPa*s. Calculate the zeta potential of the particles, assuming the validity of the Hückel equation.

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