3. Write the formula of the micelle of the sol formed as a result of reaction A (see Table 4), determine the charge of the colloidal particle. Represent in the figure the structure of the electric double layer, determine the sign of the charge of the coagulating ion.

Table 4
Reactions leading to the formation of a sol
Option Reaction A
3 BaCl2 H2SO4 (excess) = BaSO4 (precipitate) 2HCl

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