Verified Solution • 2025–26 Session moderate

QJEEM03Ch9b14: JEE Main 2003 Chemistry - Class 11 JEEM03Ch9b14 Solution: For the reaction equilibrium N 2 O 4 (g) 2NO 2 (g) the…

For the reaction equilibrium
N2O4 (g) ⇋\leftrightharpoons 2NO2 (g)
the concentrations of N2O4 and NO2 at equilibrium are 4.8 ×\times 10-2 and 1.2 ×\times 10-2 mol L-1 respectively. The value of Kc for the reaction is

Multiple Choice Options

  • A 3 ×\times 10-1 mol L-1
  • B 3 ×\times 10-3 mol L-1
  • C 3 ×\times 103 mol L-1
  • D 3.3 ×\times 102 mol L-1

Step-by-Step Verified Solution

Kc=[NO2]2[N2O4]=[1.2×10−2]2[4.8×10−2]{K_c} = {{{{\left[ {N{O_2}} \right]}^2}} \over {\left[ {{N_2}{O_4}} \right]}} = {{\left[ {1.2 \times {{10}^{ - 2}}} \right]^2} \over {\left[ {4.8 \times {{10}^{ - 2}}} \right]}}

=3×10−3 mol/L= 3 \times {10^{ - 3}}\,mol/L

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