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Question
On the basis of Hardy-Schulze rule explain why the coagulating power of phosphate is higher than chloride.
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Solution
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-Schulze rule).
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