10.3 Mixed 3*10-6 m3 of FeCl3 solution and 1*10-6 m3 of K4Fe(CN)6 solution. Both solutions had a concentration of 0.005 N. Determine the sign of the charge of the sol particles. Write the formula of the micelle. Determine the type of coagulation when adding a solution of CH3COONa and Pb(NO3)2 to the sol.

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