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NEET2009ChemistryThermodynamics (C)Actual

The dissociation constants for acetic acid and HCN at 25^ C are 1.5 10⁻⁵ and 4.5 10⁻¹⁰ , respectively. The equilibrium constant for the equilibrium - CN ⁻+ CH ₃ COOH HCN + CH ₃ COO ⁻ would be :

Options

  1. A3.0 10^4
  2. B3.0 10^5
  3. C3.0 10⁻⁵
  4. D3.0 10⁻⁴

Correct answer

A. 3.0 10^4

Step-by-step solution

aligned K _ c & = K _ a ( CH ₃ COOH ) 1 ~K _ a ( HCN ) & =1.5 10⁻⁵ 1 4.5 10⁻¹⁰ & 3 10^4 aligned

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