Which of the following ielectrolytes is least effective in causing flocculation of ferric hydroxide sol?

Which electrolyte is least effective in causing coagulation of +ve ferric hydroxide sol?

Which electrolyte is least effective in causing coagulation of +ve ferric hydroxide sol

Select the correct alternative from the choices given: Which of the following electrolytes is least effective in causing flocculation of positively charged ferric hydroxide sol?