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The equilibrium constant, Kc, for the reaction N2O4 (g) ⇄ 2NO2 (g) is 0.211 at 100°C. If the equilibrium concentration of N2O4 is 0.00251 M, calculate the equilibrium concentration of NO2. View Available Hint(s) The equilibrium constant, Kc, for the reaction N2O4 (g) ⇄ 2NO2 (g) is 0.211 at 100°C. If the equilibrium concentration of N2O4 is 0.00251 M, calculate the equilibrium concentration of NO2. 2.65 × 10-4 M 0.0230 M 2.99 × 10-5 M 5.30 × 10-4 M

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jufsanabriasa

Answer:

The concentration of NO₂ is 0,0230M

Explanation:

The equilibrium constant, kc, express the ratio in equilibrium between products and reactants. For the reaction:

N₂O₄(g) ⇄ 2NO₂ (g) kc = 0.211 at 100°C

kc = [tex]\frac{[NO_{2}]^2}{[N_{2}O_{4}]}[/tex]

In equilibrium:

0,211 = [tex]\frac{[NO_{2}]^2}{[0,00251]}[/tex]

5,2961x10⁻⁴ = [NO₂]²

0,0230 M = [NO₂]

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