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MHT CET20244 May 2024Evening ShiftChemistrySurface ChemistryActual

Which from following anions has lowest coagulating power for precipitation of positive sol?

Options

  1. A[ Fe ( CN )₆ ]^4 .
  2. BPO ₄³⁻
  3. CSO ₄²⁻
  4. DCl ⁻

Correct answer

D. Cl ⁻

Step-by-step solution

According to Schulze-Hardy rules, the ions having opposite charge to sol particles cause coagulation and greater the valency of oppositely charged ion, more is the coagulating power. Hence, the decreasing order of coagulating power for precipitation of positive sol is Fe ( CN )₆^4 PO ₄³⁻ SO ₄²⁻ Cl ⁻

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