Question

The best coagulant for the pericipation of Fe[OH]3

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Answer 1

The process of settling of colloidal particles is called coagulation or precipitation of the sol.

The greater the valence of the flocculating ion added, the greater is its power to cause precipitation. This is known as a Hardy-Schulze rule.

Here, phosphate ion (PO -3 ) has higher negative charge than Cl-ion. Hence by Hardy-Schulze rule phosphate ion is more effective for coagulation of Fe(OH) 3.

Answer 2

Answer:

the best cogulant for the precipitation Fe(OH)³ sol is Na3Po4