88. Solving a chemistry problem

708. Determine the zeta potential at the interface of the ceramic filter / aqueous solution of potassium chloride, if when the solution flows under a pressure of 20 kPa, the flow potential is 6.5 mV. The specific electrical conductivity of the medium is 0.013 Sm•m¯¹, the viscosity is 1.00 mPa•s, the relative permittivity of the solution is 80.1, and the surface conductivity of the ceramics is neglected.