In this reaction,
2SO2(g) + O2(g) ⇌ 2SO3(g) + Heat
Increasing the temperature will...
shift equilibrium right
shift equilibrium left
increase the temperature
have no effect
If we increase the temperature in the given reaction, then according to Le Chatelier's principle, the equilibrium will shift in the direction that absorbs heat. As the given reaction is exothermic, that means heat is released in the forward direction. Therefore, increasing the temperature will shift the equilibrium to the left (in the backward direction) in order to counteract the added heat.
So, the correct answer is: shift equilibrium left.