MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical EquilibriumEquilibrium Constant & Concentrations
The decomposition of N2O4 to NO2 is carried out at 280º C in chloroform. When equilibrium is reached 0.2 mol of N2O4 and 2 × 10–3mol of NO2 are present in 2 litre solution. The equilibrium constant for the reaction N2O4 2 NO2 is
A.1 × 10–3
B.2 × 10–3
C.1 × 10–5✓ Correct
D.2 × 10–5
Explanation
2 4 3 3 2 2 2 c 2 4 -3 2 c -5 0.2 [N O ] 0.1M 2 2 10 [NO ] 1 10 M 2 [NO ] K = [N O ] (1×10 ) K = 0.1 =1×10 x x Hence, the correct answer is option (c)
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