Check the applicability of the theory of fast coagulation to the kinetics of the gold hydrosol coagulation process. Determine graphically the half-coagulation time at 300 K from the following data:
time, s 0 30 60 120 240 480
concentration 10-14 particles/m3 20 14.7 11.7 8.25 5.2 3
The viscosity of the medium is 1 centipoise at 293 K.

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