2. Under what pressure should a KCl solution be forced through a ceramic membrane so that the flow potential Εflow is equal to 4•10-3 V? In this case, the ξ–potential is equal to 3⋅10^–3 V; the specific electrical conductivity of the medium κ = 1.3⋅10^–2 Ohm–1 m–1; the permittivity ε = 81, the electrical constant ε0 = 8.85⋅10^–12 F/m
the viscosity of the medium η = 10^–3 Pa⋅s;

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