Consider the Following Equilibrium

Multiple Choice

Consider the following equilibrium. 2 SO₂ (g) + O₂ (g) 2 SO₃ (g)
The equilibrium cannot be established when ________ is/are placed in a 1.0-L container.

A) 0.25 mol SO₂ (g) and 0.25 mol O₂ (g)
B) 0.75 mol SO₂ (g)
C) 0.25 mol of SO₂ (g) and 0.25 mol of SO₃ (g)
D) 0.50 mol O₂ (g) and 0.50 mol SO₃ (g)
E) 1.0 mol SO₃ (g)