At Constant Volume, Helium Gas Was Injected into an Equilibrium

question 112

Multiple Choice

At constant volume, helium gas was injected into an equilibrium mixture of 2 SO₃(g) 2 SO₂ (g) + O₂(g) The total pressure increased from 1.0 atm to 10.0 atm. Which of the following statements is correct?

• A) The concentrations of the reacting gases are unchanged.
• B) [SO₃] increases
• C) [SO₂] increases
• D) [O₂] increases
• E) [SO₂] and [O₂] decrease

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