3) Write the formula of Cu2[Fe(CN)6] sol micelles if the coagulation threshold of electrolytes is: K2SO4 - 290, NaNO3 - 293, Mg (CIO4)2 - 25 mol - eq./l.
Indicate the potential-determining ion and counterions. The sol was obtained by reacting CuCl2 and K4[Fe(CN)6].

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