Which one of the following Kc expression is correct for given reactionN204⇌2NO2
Correct answer: D. kc=[NO2]2 /[N2O4]
- A. kc=[N2O4]/[NO2]
- B. kc=[N2][O4]/[NO2]
- C. kc=[N2O4]/[NO2]2
- D. kc=[NO2]2 /[N2O4]
Explanation
The equilibrium constant (Kc) for a chemical reaction relates the concentrations of products and reactants at equilibrium. It represents the ratio of the product of product concentrations raised to their stoichiometric coefficients to the product of reactant concentrations raised to their stoichiometric coefficients.In the given reaction, the stoichiometric coefficients are:N2O4: 1NO2: 2Therefore, the correct Kc expression must reflect these coefficients:Kc = ([NO2]^2) / ([N2O4])
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