21. Solving a chemistry problem

1. Calculate the value of the flow potential at the boundary of the quartz diaphragm-aqueous solution of KCl, using the following experimental data: pressure at which the liquid is forced through the diaphragm 2000 N/m2, electrokinetic potential = 0.12 V, specific electrical conductivity of the medium ae = 8 * 10 -3 Ohm-1*m-1, dielectric constant e=81, medium viscosity n=1*10-3 N*s/m2.