Question

Calculate the reaction quotient (Qc) for the following chemical reaction at 25°C: 2SO2(g) + O2(g) ⟶ 2SO3(g)Given the following concentration values:[SO2] = 0.1 M[O2] = 0.05 M[SO3] = 0.3 MWhat is the reaction quotient Qc for this reaction? Is the reaction at equilibrium? If not, in which direction will the reaction proceed to reach equilibrium?

Answer 1

To calculate the reaction quotient  Qc  for the given reaction, we can use the following expression:Qc = [SO3]^2 /  [SO2]^2 * [O2] Given the concentration values:[SO2] = 0.1 M[O2] = 0.05 M[SO3] = 0.3 MNow, we can plug these values into the Qc expression:Qc =  0.3 ^2 /   0.1 ^2 *  0.05  Qc = 0.09 /  0.01 * 0.05 Qc = 0.09 / 0.0005Qc = 180The reaction quotient Qc for this reaction is 180.To determine if the reaction is at equilibrium, we need to compare Qc to the equilibrium constant  Kc  for this reaction at 25C. Unfortunately, the value of Kc is not provided in the problem. However, we can still determine the direction in which the reaction will proceed to reach equilibrium. If Qc > Kc, the reaction will proceed in the reverse direction  toward the reactants  to reach equilibrium. If Qc < Kc, the reaction will proceed in the forward direction  toward the products  to reach equilibrium. If Qc = Kc, the reaction is already at equilibrium.Since we don't have the value of Kc, we cannot definitively determine if the reaction is at equilibrium or in which direction it will proceed.