Answer:
The equilibrium concentration of O2(g) in the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g) can be determined by solving the equilibrium expression. The equilibrium constant is given as 800.4, and the concentration of SO2(g) and SO3(g) are 2.00 M and 10.0 M, respectively. Using the equilibrium expression, K = [SO3]2/[SO2]2[O2], the equilibrium concentration of O2(g) would be 0.016 M.
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