237 . A colloidal solution (sol) of AD was obtained by mixing V1 ml of an aqueous solution of AE with a molar concentration of C1 and V2 ml of an aqueous solution of HP with a molar concentration of C2 (data for the solution are given in Table 3.1). 1) Write the reaction equation and determine which of the reaction products forms a sol. 2) Calculate which of the starting substances - AC or VD - is taken in excess. 3) Write the micelle formula of the resulting AD sol and indicate the charge of the colloidal particle (granule). 4) Determine to which electrode and which part of the micelle will move during electroosmosis. 5) For these electrolytes: K2SO4, NaNO3, Na3PO4, MgCl2, CdSO4, Al2(SO4)3: a) determine which of the electrolyte ions will cause coagulation, and arrange the ions in a row in order of decreasing coagulation threshold; b) calculate the coagulation thresholds Sk in AD ash for each of the proposed electrolytes using the Schulz-Hardy rule or the Deryagin-Landau law, if the coagulation threshold of AD hydrosol under the action of KNO3 electrolyte is equal to С (Table 3.1).

Task number BP AE V1, ml C1, mol/l ID V2, l C2, mol/l C mol/l
237 PbI2 PbNO3 10 0.01 KI 12 0.01 2.8 *10-2

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