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AP EAMCET201726 Apr 2017Morning ShiftChemistryChemical EquilibriumActual

The equilibrium constant (K_C ) for the following equilibrium 2 SO ₂(g)+ O ₂(g) 2 SO ₃(g) at 563 ~K is 100 . At equilibrium, the number of moles of SO ₃ in the 10 litre flask is twice the number of moles of SO ₂ , then the number of moles of oxygen is

Options

  1. A0.4
  2. B0.3
  3. C0.2
  4. D0.1

Correct answer

A. 0.4

Step-by-step solution

Let, number of moles of SO ₂=x moles of SO ₃=2 x2 SO ₂(g)+ O ₂(g) 2 SO ₃(g) At equilibrium, aligned K_c & = [ SO ₃ ]^2 [ SO ₂ ]^2 [ O ₂ ] 100 & = [ 2 x 10 ]^2 [ x 10 ]^2 [ n_ O ₂ 10 ] 100 & = 40 n_ O ₂ n_ O ₂ = 40 100 =0.4 aligned Hence, number of moles of oxygen =0.4

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