For the reaction 2 A ⇌ B,the equilibrium concentrations are as follows: [A] = 0.056 M and [B] = 0.12 M.Calculate the equilibrium constant (K_eq )for the reaction.

Question

Quizplus · Accepted Answer

The equilibrium constant (Kc) can be calculated by dividing the concentration of the products raised to their stoichiometric coefficients by the concentration of the reactants raised to their stoichiometric coefficients. For this reaction:
Kc = [B]^2/[A]^2 = (0.12)^2/(0.056)^2 = 38.48 ≈ 38 (rounded to 2 significant figures)

Therefore, the correct answer is D.

For the Reaction 2 a ⇌ B,the Equilibrium Concentrations Are