7. Write down the chemical reaction of substance A with substance B. Substance A is taken in excess. As a result of the reaction, a disperse system (sol) is formed. Write down the formula of a sol micelle. Draw a conclusion about the charge of the particle. Choose an electrolyte that will have the best coagulating ability for the resulting sol. Justify your answer based on the charge and radius of the coagulating ion of the electrolyte.
Substance A (excess) Substance B Electrolytes
AlCl3 NaOH KCl; K2SO4; K3PO4

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