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JEE Main20198 Apr 2019Evening ShiftChemistryChemical EquilibriumActual

For the following reaction, equilibrium constant are given: S s + O 2 g ⇌ S O 2 g ;   K 1 = 10 52 2 S s + 3 O 2 g ⇌ 2 S O 3 g ;   K 2 = 10 129 The equilibrium constant for the reaction, 2 S O 2 g + O 2 g ⇌ 2 S O 3 g is:

Options

  1. A10 154
  2. B10 25
  3. C10 181
  4. D10 77

Correct answer

B. 10 25

Step-by-step solution

S s + O 2 g ⇌ S O 2 g ;   k 1 = 10 52 ……(i) 2 S s + 3 O 2 g ⇌ S O 2 g ; k 2 = 10 129 ……(ii) 2 S O 2 g + O 2 g ⇌ 2 S O 3 g ; k eq = ? k e q = S O 3 2 S O 2 2 O 2 k 1 = S O 2 O 2 = 10 52 k 2 = S O 3 2 O 2 3 = 10 129 k e q = k 2 k 1 2 = 10 129 10 52 2 = 10 25

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