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Which of the following is the equilibrium constant expression for the reaction?2NO(g) + O2(g) → 2NO2(g)

Question

Which of the following is the equilibrium constant expression for the reaction?2NO(g) + O2(g) → 2NO2(g)

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Solution

The equilibrium constant expression for the reaction 2NO(g) + O2(g) → 2NO2(g) is given by the law of mass action as:

Kc = [NO2]^2 / ([NO]^2 * [O2])

Where:

  • Kc is the equilibrium constant.
  • [NO2], [NO], and [O2] are the molar concentrations of NO2, NO, and O2 respectively at equilibrium.
  • The exponents correspond to the stoichiometric coefficients in the balanced chemical equation.

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