The gas-phase equilibrium
2 SO3(g) ⇌ 2 SO2(g) + O2(g)
has Kp = 0.230 at a certain temperature. A system at equilibrium is disturbed in three separate experiments; no other changes are made.
A. The partial pressure of SO2 is doubled.
B. The partial pressure of O2 is doubled.
C. The partial pressure of SO3 is doubled.
Order the three experiments from strongest to weakest in terms of the subsequent shift toward formation of SO3.