27. Решение задачки по химии №119

19. The threshold for coagulation of metallic gold hydrosol caused by NaCl is 24 mmol/L, and Na2SO4 – 12 mmol/L. Using the Schulze-Hardy and Deryagin-Landau rules, determine the sign of the sol charge and calculate the coagulation threshold for the following electrolytes: CaCl2, MgSO4, AlCl3, Al2(SO4)3.

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