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NEET2009ChemistryChemical KineticsActual

A 0.0020 M aqueous solution of an ionic compound Co ( NH ₃ )₅ ( NO ₂ ) Cl freezes at -0.00732^ C . Number of moles of ions which 1 mole of ionic compound produces on being dissolved in water will be : ( k _ f =1.86^ C / m ) -

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

B. 2

Step-by-step solution

T _ f = ik _ f m aligned i & = T _ f k _ f m & = 0.00732 1.86 0.002 = 0.00732 0.00372 i & =2 aligned Compound will be . [ Co ( NH ₃ )₅ ] NO ₅ NO ₂ ] Cl Total possible ions =2

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