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KVPY2012ChemistryChemical Equilibrium

The equilibrium constant for the following reactions are K ₁ and K ₂ , respectively. array l 2 P ( g )+3 Cl ₂( ~g ) 2 PCl ₃( ~g ) PCl ₃( ~g )+ Cl ₂( ~g ) PCl ₅( ~g ) array Then the equilibrium constant for the reaction 2 P ( g )+5 Cl ₂( ~g ) 2 PCl ₅( ~g ) is -

Options

  1. AK ₁ ~K ₂
  2. BK ₁ ~K ₂ ²
  3. CK ₁ ² ~K ₂ ²
  4. DK ₁ ² ~K ₂

Correct answer

B. K ₁ ~K ₂ ²

Step-by-step solution

array l 2 P ( g )+3 Cl ₂( ~g ) 2 PCl ₃( ~g ) K ₁ 2 PCl ₃( ~g )+2 Cl ₂( ~g ) 2 PCl ₅( ~g ) K ₂² array Net reaction : 2 P ( g )+5 Cl ₂( ~g ) 2 PCl ₅( ~g ) K = K ₁ ~K ₂²

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