The formation of SO3 from SO2 and O2 is an intermediate step in the manufacture of sulfuri...

The formation of SO3 from SO2 and O2 is an intermediate step in the manufacture of sulfuric acid, and it is also responsible tor the acid rain phenomenon. The equilibrium constant Kp for the reaction

is 0.13 at 830°C. In one experiment, 2.00 mol SO2 and 2.00 mol O2 were initially present in a flask. What must the total pressure at equilibrium be to have an 80.0 percent yield of SO3?