23. Solving a chemistry problem

148. Calculate the electrokinetic potential of iron hydroxide sol particles according to electrophoresis data: external EMF 150 V, distance between electrodes 0.465 m, displacement of the sol boundary to the anode was 40 mm in 11 minutes, experiment temperature 298 K, viscosity of the dispersion medium 8.94 * 10- 4 Pa*s and relative permittivity 78.2. What can be said about the stability of this sol?