7.13. Calculate the electrokinetic potential of the quartz surface based on the data obtained from studying the electroosmotic transfer of liquid through a quartz membrane: current strength 2∙10–3 A, volumetric velocity of the KCl solution transferred through the membrane 0.02 ml/s, specific electrical conductivity of the solution 1.2∙10 –2 Sm∙m-1, viscosity 2∙10–3 Pa∙s, relative dielectric constant 80.1.

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