73. Calculate the half-coagulation time and the coagulation rate constant using the experimental data obtained using an ultramicroscope on the change in the total number of particles during the coagulation of a lyophobic disperse system under the influence of an electrolyte.
Instruction. It is expedient to represent the Smoluchowski equation in the form:
VO /VS = f(t), after which the half-coagulation time is determined graphically.
73.
Coagulation time t, sec. 0 100 175 250 400 500
Total number of particles of the dispersed phase, VS 10-14 particles/m3 5.0 3.78 3.23 2.86 2.22 1.96

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