Question

Calculate the equilibrium constant for the reaction 2 SO2(g) + O2(g) ⇌ 2 SO3(g), given that the concentrations at equilibrium are [SO2] = 0.20 M, [O2] = 0.30 M and [SO3] = 0.50 M.

Answer 1

To calculate the equilibrium constant  Kc  for the given reaction, we can use the expression:Kc = [SO3]^2 /  [SO2]^2 * [O2] Given the concentrations at equilibrium:[SO2] = 0.20 M[O2] = 0.30 M[SO3] = 0.50 MNow, we can plug these values into the Kc expression:Kc =  0.50 ^2 /   0.20 ^2 *  0.30  Kc = 0.25 /  0.04 * 0.30 Kc = 0.25 / 0.012Kc  20.83Therefore, the equilibrium constant for the reaction is approximately 20.83.