JEE Main2003ChemistryChemical EquilibriumActual
For the reaction equilibrium N ₂ O ₄( ~g ) 2 NO ₂( ~g ) the concentrations of N ₂ O ₄ and NO ₂ at equilibrium are 4.8 10⁻² and 1.2 10⁻² ~mol ~L ⁻¹ respectively. The value of K _ c for the reaction is
Options
- A3 10⁻¹ ~mol ~L ⁻¹
- B3 10⁻³ ~mol ~L ⁻¹
- C3 10^3 ~mol ~L ⁻¹
- D3.3 10^2 ~mol ~L ⁻¹
Correct answer
B. 3 10⁻³ ~mol ~L ⁻¹
Step-by-step solution
K _ C = [ NO ₂ ]^2 [ ~N ₂ O ₄ ] = [1.2 10⁻² ]^2 [4.8 10⁻² ] =3 10⁻³ ~mol / L