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The lowering in vapour pressure is maximum for

Options

  1. A0.1 M urea
  2. B0.1 M NaCl
  3. C0.1 M MgCl ₂
  4. D0.1 M K ₄ [ Fe ( CN )₆ ]

Correct answer

D. 0.1 M K ₄ [ Fe ( CN )₆ ]

Step-by-step solution

Lowering in vapour pressure is a colligative property so, the number of particle (i.e. ion) increase, which results in decrease of vapour pressure. The lowering in vapour pressure is maximum for 0.1 M K ₄ [ Fe ( CN )₆ ] , as it dissociate into free ions i.e. four K ⁺ and one [ Fe ( CN )₆ ]⁻ .

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