In this reaction,

Question

2SO2(g) + O2(g) ⇌ 2SO3(g) + Heat

Removing O2(g)

shift equilibrium right
shift equilibrium left
increase the temperature
have no change

Answer 1

According to Le Chatelier's Principle, removing a reactant from a chemical equilibrium system will cause the equilibrium to shift in the direction that produces more of the reactant. In this case, removing O2 will drive the equilibrium towards the right-hand side of the reaction to produce more SO3. Therefore, the equilibrium will shift right.