1. The AgCl sol was obtained by mixing equal volumes of 0.0095e KCl and 0.012e AgNO3. Which of the electrolytes NaCl, MgSO4, K4[Fe(CN)6] will have the lowest coagulation threshold for this sol?
a) Write down the formula of the sol;
b) What are the coagulant ions, list them?
c) Which electrolyte is needed less for coagulation?

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