25 Determine the charge of sol particles if the electro

25 Determine the charge of sol particles if the electrolyte coagulation threshold:
Pk (NaNO3) = 300 meq / dm3;
Pk (MgCl2) = 25 meq / dm3;
Pk (Na2SO4) = 295 mg-eq / dm3;
Pk (AlCl3) = 0.5 meq / dm3.
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Questions and problems from the manual:
"Laboratory Workshop on Colloid Chemistry" Nekrasov AP, Veretenchenko BA, Kharkov NTU "KhPI", 2004
"Characteristic properties of disperse systems" Nekrasov AP, Kharkov, 1996
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