67. Solving a chemistry problem

67. Solving a chemistry problem

11. Calculate the distance traveled by the particles of the dispersed phase of the hydrosol during electrophoresis, using the data given in Table 6. where t is the electrophoresis time, ζ is the electrokinetic potential, ΔU is the voltage of the direct current source, l is the distance between the electrodes. The relative permittivity of the medium is 80.1, and its viscosity is 0.001 Pa*s.

option number t, min ζ, mV ΔU, V l, cm
11 32 55 100 35

When solving this task, do not forget that the Helmholtz-Smoluchowski equation must be transformed in such a way that instead of the absolute permittivity of the medium, the relative permittivity is used in it.

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