128. Solving a chemistry problem

128. Solving a chemistry problem

Calculate the electrokinetic potential of particles of quartz glass (SiO2), as well as the thickness of the diffuse ion layer, if the speed of movement of these particles in aqueous solutions of NaCl with a concentration of 5 * 10-4 and 6 * 10-3 mol / l are equal to 2.2 * 10-8, respectively and 0.4 * 10-8 m2 / V * s Viscosity of solutions 1.14 * 10-3 Pa * s, relative dielectric constant 82, temperature 288 K. Answer: (ζ1 \u003d 0.035 V, ζ2 \u003d 0.006 V, λ \u003d 13.7 nm, λ2=3.9 nm)

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