9.11. Calculate the mass of the precipitate obtained on a cylindrical electrode during electrophoresis of an aqueous suspension of CaCO3. Electrode length l = 2 • 10–2 m; inner electrode radius r2 = 1 • 10–3 m, outer electrode radius r1 = 28 • 10–3 m, electrode voltage U = 10 V; e = 81; n= 10–3 Pa • s; e'= 25 • 10–3 V; t= 20 s; c0 = 0.3 • 10^3 kg/m3; cm = 10^3 kg/m3.

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