112. Solving a chemistry problem

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Uploaded: 15.08.2022
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Monodisperse polystyrene latex (with a copolymer of methacrylic acid and sodium salt of vinylphenylsulfonate) with a particle diameter of 610 nm was studied by microelectrophoresis in an aqueous medium of 1.00 mmol/dm3 of potassium chloride KCl. At 25°C (and pH 7) the electrophoretic mobility was -4.05*10-8 m2/(s*V). Calculate the thickness of the DEL and the zeta potential, assuming ε = 78.35, η = 0.890 cP.

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