4. Silver iodide sol was prepared by mixing equal volumes of solutions of potassium iodide and silver nitrate. Coagulation thresholds c for various electrolytes and a given sol have the following values ​​(mol/l):
С(Ca(NO3)2=315 cNaCl=300 CMgCl2=320
CNa3PO4=0.6 CNa2SO4=20 CAlCl3=330.
Which electrolyte: KI or AgNO3 has a higher concentration? Give a reasoned answer.

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