The electrolyte which has the least effect in the coagulation of `Fe(OH)_3` sol is

Which of the following will be the least effective in the coagulation of Fe(OH)3 salt ?

Which of the following electrolytes is most effective for the coagulation of Fe(OH)_3 sol and why? NaCl, Na_2 SO_4, Na_3 PO_4

Which of the following electrolyte is more effective for the coagulation of Fe(OH)_3 sol and why ? Na_3PO_4, Na_2SO_4 ,NaCl?

Which one of the following electrolytes is most effective for the coagulation of Fe (OH)_3 sol and why? NaCl,Na_2 SO_4,Na_3 PO_4

Which one of the following electrolytes is more effective for the coagulation of Fe(OH)_3 sol and why? NaCl, Na_2SO_4 , Na_3PO_4

Which one of the following electrolytes is most effective for the coagulation of Fe(OH)_(3) sol and why? NaCl, Na_(2)SO_(4),Na_(3)PO_(4)

Which one of the following electrolytes is most effective for the coagulation of Fe(OH)_(3) sol and why? NaCl, Na_(2)SO_(4),Na_(3)PO_(4)