3. Calculate the electrokinetic potential of the sol particles according to the following data obtained in experiments on electrophoresis (Table 23):

Problem Dispersed phase and medium particle movement velocity u, m/s Field gradient H, e, n, Pa*s
288 Gold - water -2.2*10-6 100 81 0.001
289 Bismuth - water 1.1 * 10-5 1000 81 0.001
290 -1.73*10-5 800 81 0.001
291 Prussian blue - water -2.00*10-5 500 81 0.001
292 Lead - methanol 6.6*10-6 300 34 0.000612
The speed sign means the movement of particles: (-) towards the anode, ( ) towards the cathode. The shape of the particles is assumed to be spherical in all problems.
SOLUTION FOR ALL FIVE OPTIONS:

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