148(2). With a sufficiently slow introduction of substance B into a dilute solution of substance A, the formation of a hydrosol of substance C is possible. Write the formula of micelles and indicate the sign of the electric charge of the colloidal particles of this sol. Which of the recommended substances is the most economical coagulant for this sol?
No. A B C Coagulator
1 NaCl KH2SbO4 NaH2SbO4 NH4Cl; K2SO4; FeCl3
2 NaI AgNO3 AgI NaF; Ca(NO3)2; K2SO4
3 MgCl2 NaOH Mg(OH2) KCl; Zn(Ac)2; AlCl3
4 NH4CNS AgNO3 AgCNS KNO3; NaAc; Na2SO4
5 CaCl2 H2SO4 CaSO4 ZnCl2; AlCl3; NaAc
SOLUTION FOR OPTION 2

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