Answer:
Minimum quantity of an electrolyte required
to cause precipitation of a sol is called its coagulating value. Greater the
charge on flocculating ion and smaller is the amount of electrolyte required
for precipitation, higher is the coagulating power of coagulating ion (Hardy-SchuIze
Law).
Phosphate ion bear - 3 charge while
chloride ion carries only -1 charge and due to high charge phosphate ion has.
high coagulating power than that of chloride ion.
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