138. Задачка по химии №013 883

If AgNO3 is slowly introduced into a dilute solution of NH4CNS, a hydrosol of AgCNS can form. Write the formula of micelles and indicate the sign of the electric charge of the colloidal particles of this sol. Which of the recommended substances is the most economical coalescer for this sol? What other possibilities are there for separating AgCNS from a liquid?
Coagulator: KNO3, NaCH3COO, Na2SO4.