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NTA Abhyas NEET2020ChemistryChemical EquilibriumPractice

The equilibrium constant for the reaction, N 2 g + O 2 ( g ) ⇌ 2 N O ( g ) at temperature T i s 4 × 10 - 4 . The value of K c for the reaction N O ( g ) ⇌ 1 2 N 2 g + 1 2 O 2 ( g ) at the same temperature is

Options

  1. A2.5 × 10 2
  2. B50
  3. C4 × 10 - 4
  4. D0.02

Correct answer

B. 50

Step-by-step solution

N 2 g + O 2 ( g ) ⇌ 2 N O ( g ) K c = N O 2 N 2 O 2 = 4 × 10 - 4 N O ⇌ 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 4 × 10 - 4 = 50

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