126. Задачка по химии №012 683

704. For a suspension of amorphous silica SiO2 with a particle radius of 10 nm in an aqueous solution of sodium nitrate 5.00 cmol/l (pH = 4.5), an electrophoretic mobility of -1.34*10-8 m2 V-1 s-1 was reported. Calculate the ζ-potential. Other necessary data: temperature 25.0 °C, viscosity 0.930 cP, εg = 77.7.

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