Sulfur dioxide and oxygen react to form sulfur trioxide, like this: 2502 (9)+02 (8) 2503 (8) Suppose a mixture of SO 2, 0, and SO3 has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium to the right The pressure of SO2 will Some 02 is removed. O to the left The pressure of SO3 will ? O (none) O to the right The pressure of SO2 will Some SO3 is added. O to the left The pressure of O2 will ? O (none) 5