Consider the reaction 2 SO2(g) + O2(g) <=> 2 SO3(g), which is exothermic as written. What would be the effect on the equilibrium position of adding SO2(g)? 1. Reaction would go to the left, making more "products" 2. Reaction would go to the right, making more "products" 3. No change on the equilibrium position 4. Reaction would go to the right, making more "reactants" 5. Reaction would go to the left, making more "reactants"