56. Solving a chemistry problem

5. Determine the volume of electrolyte solution that will be required to coagulate 10.0 ml of cadmium sulfide hydrosol CdS if the coagulation threshold and concentration of electrolyte solutions are as follows:
Electrolyte KNO3 K2Cr2O7 K3[Fe(CN)6]
С, mol/l 3.0 0.5 0.05
, mol/l 3.0 0.05 0.004
Determine the sign of the charge of the colloidal particle. Write the micelle formula of a cadmium sulfide sol CdS obtained by passing hydrogen sulfide through a dilute solution of cadmium chloride CdCl2.