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Given the equation representing a system at equilibrium:2SO2(g) + O2(g) ⇌ 2SO3(g) + energy Which ch

NY Regents Chemistry Exam June 2022

42 Given the equation representing a system at equilibrium: 2SO2(g) + O2(g) ⇌ 2SO3(g) + energy

Which change favors the forward reaction?

(1) increasing the concentration of O2(g)

(2) increasing the temperature (3) decreasing the pressure (4) decreasing the concentration of SO2(g)

Explanation: This question is about Le Chatelier's principle. Let's look at the answer choices. Increasing the concentration of O2(g), means we have too much O2, and equilibrium should shift to the opposite side to get rid of it. O2 is on the left, and the equilibrium will shift to the right favoring forward reaction.

Answer: 1



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