Step 2: Identify what happens when O2 is removed from the system.
Step 3: Recall Le Chatelier's Principle, which states that if a change is made to a system at equilibrium, the system will adjust to counteract that change.
Step 4: Since O2 is a reactant in the reaction, removing it will decrease its concentration.
Step 5: To counteract the decrease in O2, the equilibrium will shift to the left, meaning it will produce more O2.
Step 6: As a result, the reaction will favor the formation of the reactants (2SO2 and O2) over the products (2SO3).