Consider the following reaction at a certain temperature. 2SO₃(g) ⇌ 2SO₂(g) + O₂(g)
When the initial concentration of SO₃(g) is 0.128 M, the concentration of oxygen gas at equilibrium is found to be 0.0130 M. Calculate Kc for this reaction.

Question

Quizplus · Accepted Answer

The equilibrium constant (Kc) for a reaction is calculated using the concentrations of the reactants and products at equilibrium. For the given reaction, the equilibrium constant expression is:Kc = [SO2]^2[O2] / [SO3]^2Substituting the given equilibrium concentrations into the expression, we get:Kc = (0.0130 M)^2 / (0.128 M)^2 = 8.45 x 10^-4Therefore, the correct answer is A) 8.45 x 10^-4.

Consider the Following Reaction at a Certain Temperature