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The equilibrium constant for the reaction N 2 g + O 2 g ⇌ 2 NO g At temperature T is 4 × 1 0 - 4 . the value of K C fro the reaction NO g ⇌ 1 2 N 2 g + 1 2 O 2 g at the same temperature is

Options

  1. A4 × 1 0 - 6
  2. B2.5 × 1 0 2
  3. C0.02
  4. D50

Correct answer

D. 50

Step-by-step solution

N 2 g + O 2 g ⇌ 2 NO g K C = [ N O ] 2 [ N 2 ] [ O 2 ] = 4 × 1 0 - 4 NO ⇌ 1 2 N 2 g + 1 2 O 2 g K C = [ N 2 ] 1 / 2 [ O 2 ] 1 / 2 [ N O ] 1 K C = 1 × 1 0 4 4 = 50

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