## Chemistry and Chemical Reactivity (9th Edition)

Calculating Q $Q=[SO_3]^2/[SO_2]^2[O_2]=(6.9\times10^{-3})^2/(5.0\times10^{-3})^2(1.9\times10^{-3})=1002.3$ Since Q>K, the reaction will proceed to the left before equilibrium.